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Copyright 2012-2019 Michael Bostock
Permission to use, copy, modify, and/or distribute this software for any purpose
with or without fee is hereby granted, provided that the above copyright notice
and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
THIS SOFTWARE.

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# TopoJSON Client
The **topojson-client** module provides tools for manipulating [TopoJSON](https://github.com/topojson/topojson), such as to [merge shapes](#merge) or [quantize coordinates](#quantize), and for converting back to [GeoJSON](#feature) for rendering with standard tools such as [d3.geoPath](https://github.com/d3/d3-geo/blob/master/README.md#geoPath). For example, [bl.ocks.org/3783604](https://bl.ocks.org/mbostock/3783604):
```html
<!DOCTYPE html>
<canvas width="960" height="600"></canvas>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://unpkg.com/topojson-client@3"></script>
<script>
var context = d3.select("canvas").node().getContext("2d"),
path = d3.geoPath().context(context);
d3.json("https://d3js.org/us-10m.v1.json", function(error, us) {
if (error) throw error;
context.beginPath();
path(topojson.mesh(us));
context.stroke();
});
</script>
```
## Installing
If you use NPM, `npm install topojson-client`. Otherwise, download the [latest release](https://github.com/topojson/topojson-client/releases/latest). You can also load directly from [UNPKG](https://unpkg.com) as a [standalone library](https://unpkg.com/topojson-client@3). AMD, CommonJS, and vanilla environments are supported. In vanilla, a `topojson` global is exported:
```html
<script src="https://unpkg.com/topojson-client@3"></script>
<script>
var feature = topojson.feature(topology, "foo");
</script>
```
The TopoJSON client API is implemented using ES2015 modules. In compatible environments, you can import the library as a namespace, like so:
```js
import * as topojson from "topojson-client";
```
[Try topojson-client in your browser.](https://runkit.com/npm/topojson-client)
# API Reference
<a name="feature" href="#feature">#</a> topojson.<b>feature</b>(<i>topology</i>, <i>object</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/feature.js "Source")
Returns the GeoJSON Feature or FeatureCollection for the specified *object* in the given *topology*. If the specified object is a string, it is treated as *topology*.objects[*object*]. Then, if the object is a GeometryCollection, a FeatureCollection is returned, and each geometry in the collection is mapped to a Feature. Otherwise, a Feature is returned. The returned feature is a shallow copy of the source *object*: they may share identifiers, bounding boxes, properties and coordinates.
Some examples:
* A point is mapped to a feature with a geometry object of type “Point”.
* Likewise for line strings, polygons, and other simple geometries.
* A null geometry object (of type null in TopoJSON) is mapped to a feature with a null geometry object.
* A geometry collection of points is mapped to a feature collection of features, each with a point geometry.
* A geometry collection of geometry collections is mapped to a feature collection of features, each with a geometry collection.
See [feature-test.js](https://github.com/topojson/topojson-client/blob/master/test/feature-test.js) for more examples.
<a name="merge" href="#merge">#</a> topojson.<b>merge</b>(<i>topology</i>, <i>objects</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/merge.js#L5 "Source")
Returns the GeoJSON MultiPolygon geometry object representing the union for the specified array of Polygon and MultiPolygon *objects* in the given *topology*. Interior borders shared by adjacent polygons are removed. See [Merging States](https://bl.ocks.org/mbostock/5416405) for an example. The returned geometry is a shallow copy of the source *object*: they may share coordinates.
<a name="mergeArcs" href="#mergeArcs">#</a> topojson.<b>mergeArcs</b>(<i>topology</i>, <i>objects</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/merge.js#L9 "Source")
Equivalent to [topojson.merge](#merge), but returns TopoJSON rather than GeoJSON. The returned geometry is a shallow copy of the source *object*: they may share coordinates.
<a name="mesh" href="#mesh">#</a> topojson.<b>mesh</b>(<i>topology</i>[, <i>object</i>[, <i>filter</i>]]) [<>](https://github.com/topojson/topojson-client/blob/master/src/mesh.js#L4 "Source")
Returns the GeoJSON MultiLineString geometry object representing the mesh for the specified *object* in the given *topology*. This is useful for rendering strokes in complicated objects efficiently, as edges that are shared by multiple features are only stroked once. If *object* is not specified, a mesh of the entire topology is returned. The returned geometry is a shallow copy of the source *object*: they may share coordinates.
An optional *filter* function may be specified to prune arcs from the returned mesh using the topology. The filter function is called once for each candidate arc and takes two arguments, *a* and *b*, two geometry objects that share that arc. Each arc is only included in the resulting mesh if the filter function returns true. For typical map topologies the geometries *a* and *b* are adjacent polygons and the candidate arc is their boundary. If an arc is only used by a single geometry then *a* and *b* are identical. This property is useful for separating interior and exterior boundaries; an easy way to produce a mesh of interior boundaries is:
```js
var interiors = topojson.mesh(topology, object, function(a, b) { return a !== b; });
```
See this [county choropleth](https://bl.ocks.org/mbostock/4060606) for example. Note: the *a* and *b* objects are TopoJSON objects (pulled directly from the topology), and not automatically converted to GeoJSON features as by [topojson.feature](#feature).
<a name="meshArcs" href="#meshArcs">#</a> topojson.<b>meshArcs</b>(<i>topology</i>[, <i>object</i>[, <i>filter</i>]]) [<>](https://github.com/topojson/topojson-client/blob/master/src/mesh.js#L8 "Source")
Equivalent to [topojson.mesh](#mesh), but returns TopoJSON rather than GeoJSON. The returned geometry is a shallow copy of the source *object*: they may share coordinates.
<a name="neighbors" href="#neighbors">#</a> topojson.<b>neighbors</b>(<i>objects</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/neighbors.js "Source")
Returns an array representing the set of neighboring objects for each object in the specified *objects* array. The returned array has the same number of elements as the input array; each element *i* in the returned array is the array of indexes for neighbors of object *i* in the input array. For example, if the specified objects array contains the features *foo* and *bar*, and these features are neighbors, the returned array will be \[\[1\], \[0\]\], indicating that *foo* is a neighbor of *bar* and *vice versa*. Each array of neighbor indexes for each object is guaranteed to be sorted in ascending order.
For a practical example, see the [world map](https://bl.ocks.org/mbostock/4180634) with topological coloring.
### Transforms
<a name="bbox" href="#bbox">#</a> topojson.<b>bbox</b>(<i>topology</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/bbox.js "Source")
Returns the computed [bounding box](https://github.com/topojson/topojson-specification#3-bounding-boxes) of the specified *topology* [*x*₀, *y*₀, *x*₁, *y*₁] where *x*₀ is the minimum *x*-value, *y*₀ is the minimum *y*-value, *x*₁ is the maximum *x*-value, and *y*₁ is the maximum *y*-value. If the *topology* has no points and no arcs, the returned bounding box is [∞, ∞, -∞, -∞]. (This method ignores the existing *topology*.bbox, if any.)
<a name="quantize" href="#quantize">#</a> topojson.<b>quantize</b>(<i>topology</i>, <i>transform</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/quantize.js "Source")
Returns a shallow copy of the specified *topology* with [quantized and delta-encoded](https://github.com/topojson/topojson-specification#213-arcs) arcs according to the specified [*transform* object](https://github.com/topojson/topojson-specification/blob/master/README.md#212-transforms). If the *topology* is already quantized, an error is thrown. See also [topoquantize](#topoquantize).
If a quantization number *n* is specified instead of a *transform* object, the corresponding transform object is first computed using the bounding box of the topology. In this case, the quantization number *n* must be a positive integer greater than one which determines the maximum number of expressible values per dimension in the resulting quantized coordinates; typically, a power of ten is chosen such as 1e4, 1e5 or 1e6. If the *topology* does not already have a *topology*.bbox, one is computed using [topojson.bbox](#bbox).
<a name="transform" href="#transform">#</a> topojson.<b>transform</b>(<i>transform</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/transform.js "Source")
If the specified [*transform* object](https://github.com/topojson/topojson-specification/blob/master/README.md#212-transforms) is non-null, returns a [point *transform* function](#_transform) to remove delta-encoding and apply the transform. If the *transform* is null, returns the identity function.
<a name="untransform" href="#untransform">#</a> topojson.<b>untransform</b>(<i>transform</i>) [<>](https://github.com/topojson/topojson-client/blob/master/src/untransform.js "Source")
If the specified [*transform* object](https://github.com/topojson/topojson-specification/blob/master/README.md#212-transforms) is non-null, returns a [point *transform* function](#_transform) to apply quantized delta-encoding and remove the transform. If the *transform* is null, returns the identity function. See also [topojson.quantize](#quantize).
<a name="_transform" href="#_transform">#</a> <i>transform</i>(<i>point</i>[, <i>index</i>])
Applies this transform function to the specified *point*, returning a new point with the transformed coordinates. If the specified *index* is truthy, the input *point* is treated as relative to the previous point passed to this transform, as is the case with delta-encoded arcs.
## Command Line Reference
### topo2geo
<a name="topo2geo" href="#topo2geo">#</a> <b>topo2geo</b> [<i>options…</i>] &lt;<i>name</i>=<i>file</i>&gt;… [<>](https://github.com/topojson/topojson-client/blob/master/bin/topo2geo "Source")
Converts one or more TopoJSON objects from an input topology to one or more GeoJSON features. For example, to convert the “states” TopoJSON GeometryCollection object in us.json to a GeoJSON feature collection in us-states.json:
```
topo2geo states=us-states.json < us.json
```
For convenience, you can omit the object name and specify only the file *name*; the object name will be the basename of the file, with the directory and extension removed. For example, to convert the “states” TopoJSON GeometryCollection object in us.json to a GeoJSON feature collection in states.json:
```
topo2geo states.json < us.json
```
See also [geo2topo](https://github.com/topojson/topojson/blob/master/README.md#geo2topo).
To list the available object names, use [--list](#topo2geo_list).
<a name="topo2geo_help" href="#topo2geo_help">#</a> topo2geo <b>-h</b>
<br><a href="#topo2geo_help">#</a> topo2geo <b>--help</b>
Output usage information.
<a name="topo2geo_version" href="#topo2geo_version">#</a> topo2geo <b>-V</b>
<br><a href="#topo2geo_version">#</a> topo2geo <b>--version</b>
Output the version number.
<a name="topo2geo_newline_delimited" href="#topo2geo_newline_delimited">#</a> topo2geo <b>-n</b>
<br><a href="#topo2geo_newline_delimited">#</a> topo2geo <b>--newline-delimited</b>
Output [newline-delimited JSON](http://ndjson.org/), with one feature per line.
<a name="topo2geo_in" href="#topo2geo_in">#</a> topo2geo <b>-i</b> <i>file</i>
<br><a href="#topo2geo_in">#</a> topo2geo <b>--in</b> <i>file</i>
Specify the input TopoJSON file name. Defaults to “-” for stdin.
<a name="topo2geo_list" href="#topo2geo_list">#</a> topo2geo <b>-l</b>
<br><a href="#topo2geo_list">#</a> topo2geo <b>--list</b>
List the names of the objects in the input topology, and then exit. For example, this:
```
topo2geo -l < us.json
```
Will output this:
```
counties
states
nation
```
### topomerge
<a name="topomerge" href="#topomerge">#</a> <b>topomerge</b> [<i>options…</i>] &lt;<i>target</i>=<i>source</i>&gt; [<i>file</i>] [<>](https://github.com/topojson/topojson-client/blob/master/bin/topomerge "Source")
Merges polygons (or meshes lines) from the specified *source* TopoJSON geometry collection object, assigning to the *target* object.
See also [topojson.mergeArcs](#mergeArcs) and [topojson.meshArcs](#meshArcs).
<a name="topomerge_help" href="#topomerge_help">#</a> topomerge <b>-h</b>
<br><a href="#topomerge_help">#</a> topomerge <b>--help</b>
Output usage information.
<a name="topomerge_version" href="#topomerge_version">#</a> topomerge <b>-V</b>
<br><a href="#topomerge_version">#</a> topomerge <b>--version</b>
Output the version number.
<a name="topomerge_out" href="#topomerge_out">#</a> topomerge <b>-o</b> <i>file</i>
<br><a href="#topomerge_out">#</a> topomerge <b>--out</b> <i>file</i>
Specify the output TopoJSON file name. Defaults to “-” for stdout.
<a name="topomerge_key" href="#topomerge_key">#</a> topomerge <b>-k</b> <i>expression</i>
<br><a href="#topomerge_key">#</a> topomerge <b>--key</b> <i>expression</i>
Specify a JavaScript *expression*, given a TopoJSON geometry object *d* and its zero-based index *i* in its parent collection, that determines how geometry objects are grouped before merging; each group is merged separately. For example, given a topology of U.S. *counties*, where the *id* of each county is it’s five-digit FIPS code, the county boundaries can be merged into state boundaries by using the first two digits of the county FIPS code, which represents the state FIPS code:
```
topomerge states=counties -k 'd.id.slice(0, 2)' < us-counties.json > us-states.json
```
If a key is not specified, all input geometry objects will be merged together. For example, this can be used to merge the state boundaries into a single nation boundary:
```
topomerge nation=states < us-states.json > us.json
```
<a name="topomerge_filter" href="#topomerge_filter">#</a> topomerge <b>-f</b> <i>expression</i>
<br><a href="#topomerge_filter">#</a> topomerge <b>--filter</b> <i>expression</i>
Specify a JavaScript *expression* that filters the input geometries before merging or meshing. In conjunction with [--mesh](#topomerge_mesh), the *expression* is given two TopoJSON geometry objects *a* and *b* that represent the adjacent features for a given arc segment; if the *expression* evaluates truthily, the associated arc segment is retained in mesh. Otherwise, the *expression* is given an input TopoJSON geometry object *d* and its zero-based index *i* in its parent collection; if the *expression* evaluates truthily, the geometry object is retained in the merged polygon.
<a name="topomerge_mesh" href="#topomerge_mesh">#</a> topomerge <b>--mesh</b>
Use [topojson.meshArcs](#meshArcs) instead of [topojson.mergeArcs](#mergeArcs), generating a geometry collection of lines rather than polygons.
### topoquantize
<a name="topoquantize" href="#topoquantize">#</a> <b>topoquantize</b> [<i>options…</i>] &lt;<i>n</i>&gt; [<i>file</i>] [<>](https://github.com/topojson/topojson-client/blob/master/bin/topoquantize "Source")
Quantizes the coordinates of the input TopoJSON topology and [delta-encodes](https://github.com/topojson/topojson-specification#213-arcs) the topology’s arcs. The quantization parameter *n* must be a positive integer greater than one, and determines the maximum expressible number of unique values per dimension in the resulting quantized coordinates; typically, a power of ten is chosen such as 1e4, 1e5 or 1e6. If the *topology* does not already have a [bbox](#bbox), one is computed and assigned. If the *topology* is already quantized, an error is thrown. See also [topojson.quantize](#quantize).
<a name="topoquantize_help" href="#topoquantize_help">#</a> topoquantize <b>-h</b>
<br><a href="#topoquantize_help">#</a> topoquantize <b>--help</b>
Output usage information.
<a name="topoquantize_version" href="#topoquantize_version">#</a> topoquantize <b>-V</b>
<br><a href="#topoquantize_version">#</a> topoquantize <b>--version</b>
Output the version number.
<a name="topoquantize_out" href="#topoquantize_out">#</a> topoquantize <b>-o</b> <i>file</i>
<br><a href="#topoquantize_out">#</a> topoquantize <b>--out</b> <i>file</i>
Specify the output TopoJSON file name. Defaults to “-” for stdout.

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#!/usr/bin/env node
var fs = require("fs"),
path = require("path"),
commander = require("commander"),
topojson = require("../");
commander
.version(require("../package.json").version)
.usage("[options] <name=file>…")
.description("Converts TopoJSON objects to GeoJSON features.")
.option("-i, --in <file>", "input topology file name; defaults to “-” for stdin", "-")
.option("-l, --list", "list the object names on the input topology")
.option("-n, --newline-delimited", "output newline-delimited JSON")
.parse(process.argv);
if (!commander.list === commander.args.length < 1) {
console.error();
console.error(" error: " + (commander.list ? "--list does not take arguments" : "no arguments specified"));
console.error();
process.exit(1);
}
read(commander.in).then(write).catch(abort);
function read(file) {
return new Promise(function(resolve, reject) {
var data = [];
readStream(file)
.on("data", function(d) { data.push(d); })
.on("end", function() { resolve(JSON.parse(Buffer.concat(data))); })
.on("error", reject);
});
}
function readStream(file) {
return file === "-" ? process.stdin : fs.createReadStream(file);
}
function write(topology) {
var write, writer = commander.newlineDelimited ? writeNewlineDelimitedFeature : writeFeature, name;
if (commander.list) {
for (name in topology.objects) {
console.log(name);
}
return;
}
write = Promise.resolve();
commander.args.forEach(function(specifier) {
var i = specifier.indexOf("="),
file = i >= 0 ? specifier.slice(i + 1) : specifier,
name = i >= 0 ? specifier.slice(0, i) : path.basename(specifier, path.extname(specifier));
if (!(name in topology.objects)) {
console.error();
console.error(" error: object “" + name + "” not found");
console.error();
process.exit(1);
}
write = write.then(writer(file, topojson.feature(topology, topology.objects[name])));
});
return write;
}
function writeStream(file) {
return (file === "-" ? process.stdout : fs.createWriteStream(file)).on("error", handleEpipe);
}
function writeFeature(file, feature) {
return new Promise(function(resolve, reject) {
writeStream(file).on("error", reject)[file === "-" ? "write" : "end"](JSON.stringify(feature) + "\n", function(error) {
if (error) reject(error);
else resolve();
});
});
}
function writeNewlineDelimitedFeature(file, feature) {
return feature == null || feature.type != "FeatureCollection" ? writeFeature(file, feature) : new Promise(function(resolve, reject) {
var stream = writeStream(file).on("error", reject), i = -1, n = feature.features.length;
(function writeNext(error) {
if (error) return void reject(error);
if (++i >= n) {
if (file !== "-") stream.end(writeEnd);
else writeEnd();
} else {
stream.write(JSON.stringify(feature.features[i]) + "\n", writeNext);
}
})(null);
function writeEnd(error) {
if (error) return void reject(error);
resolve();
}
});
}
function handleEpipe(error) {
if (error.code === "EPIPE" || error.errno === "EPIPE") {
process.exit(0);
}
}
function abort(error) {
console.error(error.stack);
}

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#!/usr/bin/env node
var fs = require("fs"),
vm = require("vm"),
commander = require("commander"),
topojson = require("../");
commander
.version(require("../package.json").version)
.usage("[options] <target=source> [file]")
.description("Merges the source TopoJSON geometry collection, assigning to the target.")
.option("-o, --out <file>", "output topology file name; defaults to “-” for stdout", "-")
.option("-k, --key <expression>", "group geometries by key")
.option("-f, --filter <expression>", "filter merged geometries or meshed lines")
.option("--mesh", "mesh lines instead of merging polygons")
.parse(process.argv);
if (commander.args.length < 1) {
console.error();
console.error(" error: missing source and target names");
console.error();
process.exit(1);
} else if (commander.args.length > 2) {
console.error();
console.error(" error: multiple input files");
console.error();
process.exit(1);
} else if (commander.args.length === 1) {
commander.args.push("-");
}
var keyFunction = function() {},
postfilterFunction = function() { return true; },
prefilterFunction = function() { return true; };
if (commander.key != null) {
var keySandbox = {d: undefined, i: -1},
keyContext = new vm.createContext(keySandbox),
keyScript = new vm.Script("(" + commander.key + ")");
keyFunction = function(d, i) {
keySandbox.d = d;
keySandbox.i = i;
return keyScript.runInContext(keyContext);
};
}
if (commander.filter != null) {
if (commander.mesh) {
var filterSandbox = {a: undefined, b: undefined},
filterContext = new vm.createContext(filterSandbox),
filterScript = new vm.Script("(" + commander.filter + ")");
postfilterFunction = function(a, b) {
filterSandbox.a = a;
filterSandbox.b = b;
return filterScript.runInContext(filterContext);
};
} else {
var filterSandbox = {d: undefined, i: -1},
filterContext = new vm.createContext(filterSandbox),
filterScript = new vm.Script("(" + commander.filter + ")");
prefilterFunction = function(d, i) {
filterSandbox.d = d;
filterSandbox.i = i;
return filterScript.runInContext(filterContext);
};
}
}
read(commander.args[1]).then(merge).then(write(commander.out)).catch(abort);
function read(file) {
return new Promise(function(resolve, reject) {
var data = [], stream = file === "-" ? process.stdin : fs.createReadStream(file);
stream
.on("data", function(d) { data.push(d); })
.on("end", function() { resolve(JSON.parse(Buffer.concat(data))); })
.on("error", reject);
});
}
function merge(topology) {
var name = commander.args[0], i = name.indexOf("="),
sourceName = i >= 0 ? name.slice(i + 1) : name,
targetName = i >= 0 ? name.slice(0, i) : name,
source = topology.objects[sourceName],
target = topology.objects[targetName] = {type: "GeometryCollection", geometries: []},
geometries = target.geometries,
geometriesByKey = {},
k;
if (!source) {
console.error();
console.error(" error: source object “" + name + "” not found");
console.error();
process.exit(1);
}
if (source.type !== "GeometryCollection") {
console.error();
console.error(" error: expected GeometryCollection, not " + source.type);
console.error();
process.exit(1);
}
source.geometries.forEach(function(geometry, i) {
if (!prefilterFunction(geometry, i)) return;
var k = stringify(keyFunction(geometry, i)), v;
if (v = geometriesByKey[k]) v.push(geometry);
else geometriesByKey[k] = v = [geometry];
});
if (commander.mesh) {
for (k in geometriesByKey) {
var v = geometriesByKey[k],
o = topojson.meshArcs(topology, {type: "GeometryCollection", geometries: v}, postfilterFunction);
o.id = k.length > 1 ? k.slice(1) : undefined;
o.properties = properties(v);
geometries.push(o);
}
} else {
for (k in geometriesByKey) {
var v = geometriesByKey[k],
o = topojson.mergeArcs(topology, v);
o.id = k.length > 1 ? k.slice(1) : undefined;
o.properties = properties(v);
geometries.push(o);
}
}
return topology;
}
function stringify(key) {
return key == null ? "$" : "$" + key;
}
function properties(objects) {
var properties = undefined, hasProperties;
objects.forEach(function(object) {
var newProperties = object.properties, key;
// If no properties have yet been merged,
// then we need to initialize the merged properties object.
if (properties === undefined) {
// If the first set of properties is null, undefined or empty,
// then the result of the merge will be the empty set.
// Otherwise, the new properties can copied into the merged object.
if (newProperties != null) for (key in newProperties) {
properties = {};
for (key in newProperties) properties[key] = newProperties[key];
return;
}
properties = null;
return;
}
// If any of the new properties are null or undefined,
// then the result of the merge will be the empty set.
if (newProperties == null) properties = null;
if (properties === null) return;
// Now mark as inconsistent any of the properties
// that differ from previously-merged values.
for (key in newProperties) {
if ((key in properties) && !is(properties[key], newProperties[key])) {
properties[key] = undefined;
}
}
// And mark as inconsistent any of the properties
// that are missing from this new set of merged values.
for (key in properties) {
if (!(key in newProperties)) {
properties[key] = undefined;
}
}
return object;
});
// Return undefined if there are no properties.
for (var key in properties) {
if (properties[key] !== undefined) {
return properties;
}
}
};
function write(file) {
var stream = (file === "-" ? process.stdout : fs.createWriteStream(file)).on("error", handleEpipe);
return function(topology) {
return new Promise(function(resolve, reject) {
stream.on("error", reject)[stream === process.stdout ? "write" : "end"](JSON.stringify(topology) + "\n", function(error) {
if (error) reject(error);
else resolve();
});
});
};
}
function handleEpipe(error) {
if (error.code === "EPIPE" || error.errno === "EPIPE") {
process.exit(0);
}
}
function abort(error) {
console.error(error.stack);
}
function is(x, y) {
return x === y ? x !== 0 || 1 / x === 1 / y : x !== x && y !== y;
}

74
frontend/node_modules/topojson-client/bin/topoquantize generated vendored Executable file
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@@ -0,0 +1,74 @@
#!/usr/bin/env node
var fs = require("fs"),
commander = require("commander"),
topojson = require("../");
commander
.version(require("../package.json").version)
.usage("[options] <n> [file]")
.description("Quantizes TopoJSON.")
.option("-o, --out <file>", "output topology file name; defaults to “-” for stdout", "-")
.parse(process.argv);
if (commander.args.length < 1) {
console.error();
console.error(" error: missing quantization parameter n");
console.error();
process.exit(1);
} else if (commander.args.length > 2) {
console.error();
console.error(" error: multiple input files");
console.error();
process.exit(1);
} else if (commander.args.length === 1) {
commander.args.push("-");
}
if (!(Math.floor(commander.args[0]) >= 2)) {
console.error();
console.error(" error: invalid quantization parameter " + commander.args[0]);
console.error();
process.exit(1);
}
read(commander.args[1]).then(quantize).then(write(commander.out)).catch(abort);
function read(file) {
return new Promise(function(resolve, reject) {
var data = [], stream = file === "-" ? process.stdin : fs.createReadStream(file);
stream
.on("data", function(d) { data.push(d); })
.on("end", function() { resolve(JSON.parse(Buffer.concat(data))); })
.on("error", reject);
});
}
function quantize(topology) {
return topojson.quantize(topology, +commander.args[0]);
}
function write(file) {
var stream = (file === "-" ? process.stdout : fs.createWriteStream(file)).on("error", handleEpipe);
return function(topology) {
return new Promise(function(resolve, reject) {
stream.on("error", reject)[stream === process.stdout ? "write" : "end"](JSON.stringify(topology) + "\n", function(error) {
if (error) reject(error);
else resolve();
});
});
};
}
function handleEpipe(error) {
if (error.code === "EPIPE" || error.errno === "EPIPE") {
process.exit(0);
}
}
function abort(error) {
console.error();
console.error(" error: " + error.message);
console.error();
process.exit(1);
}

508
frontend/node_modules/topojson-client/dist/topojson-client.js generated vendored Normal file
View File

@@ -0,0 +1,508 @@
// https://github.com/topojson/topojson-client v3.1.0 Copyright 2019 Mike Bostock
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = global || self, factory(global.topojson = global.topojson || {}));
}(this, function (exports) { 'use strict';
function identity(x) {
return x;
}
function transform(transform) {
if (transform == null) return identity;
var x0,
y0,
kx = transform.scale[0],
ky = transform.scale[1],
dx = transform.translate[0],
dy = transform.translate[1];
return function(input, i) {
if (!i) x0 = y0 = 0;
var j = 2, n = input.length, output = new Array(n);
output[0] = (x0 += input[0]) * kx + dx;
output[1] = (y0 += input[1]) * ky + dy;
while (j < n) output[j] = input[j], ++j;
return output;
};
}
function bbox(topology) {
var t = transform(topology.transform), key,
x0 = Infinity, y0 = x0, x1 = -x0, y1 = -x0;
function bboxPoint(p) {
p = t(p);
if (p[0] < x0) x0 = p[0];
if (p[0] > x1) x1 = p[0];
if (p[1] < y0) y0 = p[1];
if (p[1] > y1) y1 = p[1];
}
function bboxGeometry(o) {
switch (o.type) {
case "GeometryCollection": o.geometries.forEach(bboxGeometry); break;
case "Point": bboxPoint(o.coordinates); break;
case "MultiPoint": o.coordinates.forEach(bboxPoint); break;
}
}
topology.arcs.forEach(function(arc) {
var i = -1, n = arc.length, p;
while (++i < n) {
p = t(arc[i], i);
if (p[0] < x0) x0 = p[0];
if (p[0] > x1) x1 = p[0];
if (p[1] < y0) y0 = p[1];
if (p[1] > y1) y1 = p[1];
}
});
for (key in topology.objects) {
bboxGeometry(topology.objects[key]);
}
return [x0, y0, x1, y1];
}
function reverse(array, n) {
var t, j = array.length, i = j - n;
while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
}
function feature(topology, o) {
if (typeof o === "string") o = topology.objects[o];
return o.type === "GeometryCollection"
? {type: "FeatureCollection", features: o.geometries.map(function(o) { return feature$1(topology, o); })}
: feature$1(topology, o);
}
function feature$1(topology, o) {
var id = o.id,
bbox = o.bbox,
properties = o.properties == null ? {} : o.properties,
geometry = object(topology, o);
return id == null && bbox == null ? {type: "Feature", properties: properties, geometry: geometry}
: bbox == null ? {type: "Feature", id: id, properties: properties, geometry: geometry}
: {type: "Feature", id: id, bbox: bbox, properties: properties, geometry: geometry};
}
function object(topology, o) {
var transformPoint = transform(topology.transform),
arcs = topology.arcs;
function arc(i, points) {
if (points.length) points.pop();
for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length; k < n; ++k) {
points.push(transformPoint(a[k], k));
}
if (i < 0) reverse(points, n);
}
function point(p) {
return transformPoint(p);
}
function line(arcs) {
var points = [];
for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
if (points.length < 2) points.push(points[0]); // This should never happen per the specification.
return points;
}
function ring(arcs) {
var points = line(arcs);
while (points.length < 4) points.push(points[0]); // This may happen if an arc has only two points.
return points;
}
function polygon(arcs) {
return arcs.map(ring);
}
function geometry(o) {
var type = o.type, coordinates;
switch (type) {
case "GeometryCollection": return {type: type, geometries: o.geometries.map(geometry)};
case "Point": coordinates = point(o.coordinates); break;
case "MultiPoint": coordinates = o.coordinates.map(point); break;
case "LineString": coordinates = line(o.arcs); break;
case "MultiLineString": coordinates = o.arcs.map(line); break;
case "Polygon": coordinates = polygon(o.arcs); break;
case "MultiPolygon": coordinates = o.arcs.map(polygon); break;
default: return null;
}
return {type: type, coordinates: coordinates};
}
return geometry(o);
}
function stitch(topology, arcs) {
var stitchedArcs = {},
fragmentByStart = {},
fragmentByEnd = {},
fragments = [],
emptyIndex = -1;
// Stitch empty arcs first, since they may be subsumed by other arcs.
arcs.forEach(function(i, j) {
var arc = topology.arcs[i < 0 ? ~i : i], t;
if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
}
});
arcs.forEach(function(i) {
var e = ends(i),
start = e[0],
end = e[1],
f, g;
if (f = fragmentByEnd[start]) {
delete fragmentByEnd[f.end];
f.push(i);
f.end = end;
if (g = fragmentByStart[end]) {
delete fragmentByStart[g.start];
var fg = g === f ? f : f.concat(g);
fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
} else {
fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
}
} else if (f = fragmentByStart[end]) {
delete fragmentByStart[f.start];
f.unshift(i);
f.start = start;
if (g = fragmentByEnd[start]) {
delete fragmentByEnd[g.end];
var gf = g === f ? f : g.concat(f);
fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
} else {
fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
}
} else {
f = [i];
fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
}
});
function ends(i) {
var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
else p1 = arc[arc.length - 1];
return i < 0 ? [p1, p0] : [p0, p1];
}
function flush(fragmentByEnd, fragmentByStart) {
for (var k in fragmentByEnd) {
var f = fragmentByEnd[k];
delete fragmentByStart[f.start];
delete f.start;
delete f.end;
f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
fragments.push(f);
}
}
flush(fragmentByEnd, fragmentByStart);
flush(fragmentByStart, fragmentByEnd);
arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
return fragments;
}
function mesh(topology) {
return object(topology, meshArcs.apply(this, arguments));
}
function meshArcs(topology, object, filter) {
var arcs, i, n;
if (arguments.length > 1) arcs = extractArcs(topology, object, filter);
else for (i = 0, arcs = new Array(n = topology.arcs.length); i < n; ++i) arcs[i] = i;
return {type: "MultiLineString", arcs: stitch(topology, arcs)};
}
function extractArcs(topology, object, filter) {
var arcs = [],
geomsByArc = [],
geom;
function extract0(i) {
var j = i < 0 ? ~i : i;
(geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
}
function extract1(arcs) {
arcs.forEach(extract0);
}
function extract2(arcs) {
arcs.forEach(extract1);
}
function extract3(arcs) {
arcs.forEach(extract2);
}
function geometry(o) {
switch (geom = o, o.type) {
case "GeometryCollection": o.geometries.forEach(geometry); break;
case "LineString": extract1(o.arcs); break;
case "MultiLineString": case "Polygon": extract2(o.arcs); break;
case "MultiPolygon": extract3(o.arcs); break;
}
}
geometry(object);
geomsByArc.forEach(filter == null
? function(geoms) { arcs.push(geoms[0].i); }
: function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
return arcs;
}
function planarRingArea(ring) {
var i = -1, n = ring.length, a, b = ring[n - 1], area = 0;
while (++i < n) a = b, b = ring[i], area += a[0] * b[1] - a[1] * b[0];
return Math.abs(area); // Note: doubled area!
}
function merge(topology) {
return object(topology, mergeArcs.apply(this, arguments));
}
function mergeArcs(topology, objects) {
var polygonsByArc = {},
polygons = [],
groups = [];
objects.forEach(geometry);
function geometry(o) {
switch (o.type) {
case "GeometryCollection": o.geometries.forEach(geometry); break;
case "Polygon": extract(o.arcs); break;
case "MultiPolygon": o.arcs.forEach(extract); break;
}
}
function extract(polygon) {
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
(polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
});
});
polygons.push(polygon);
}
function area(ring) {
return planarRingArea(object(topology, {type: "Polygon", arcs: [ring]}).coordinates[0]);
}
polygons.forEach(function(polygon) {
if (!polygon._) {
var group = [],
neighbors = [polygon];
polygon._ = 1;
groups.push(group);
while (polygon = neighbors.pop()) {
group.push(polygon);
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
if (!polygon._) {
polygon._ = 1;
neighbors.push(polygon);
}
});
});
});
}
}
});
polygons.forEach(function(polygon) {
delete polygon._;
});
return {
type: "MultiPolygon",
arcs: groups.map(function(polygons) {
var arcs = [], n;
// Extract the exterior (unique) arcs.
polygons.forEach(function(polygon) {
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
arcs.push(arc);
}
});
});
});
// Stitch the arcs into one or more rings.
arcs = stitch(topology, arcs);
// If more than one ring is returned,
// at most one of these rings can be the exterior;
// choose the one with the greatest absolute area.
if ((n = arcs.length) > 1) {
for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
if ((ki = area(arcs[i])) > k) {
t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
}
}
}
return arcs;
}).filter(function(arcs) {
return arcs.length > 0;
})
};
}
function bisect(a, x) {
var lo = 0, hi = a.length;
while (lo < hi) {
var mid = lo + hi >>> 1;
if (a[mid] < x) lo = mid + 1;
else hi = mid;
}
return lo;
}
function neighbors(objects) {
var indexesByArc = {}, // arc index -> array of object indexes
neighbors = objects.map(function() { return []; });
function line(arcs, i) {
arcs.forEach(function(a) {
if (a < 0) a = ~a;
var o = indexesByArc[a];
if (o) o.push(i);
else indexesByArc[a] = [i];
});
}
function polygon(arcs, i) {
arcs.forEach(function(arc) { line(arc, i); });
}
function geometry(o, i) {
if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
}
var geometryType = {
LineString: line,
MultiLineString: polygon,
Polygon: polygon,
MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
};
objects.forEach(geometry);
for (var i in indexesByArc) {
for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
for (var k = j + 1; k < m; ++k) {
var ij = indexes[j], ik = indexes[k], n;
if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
}
}
}
return neighbors;
}
function untransform(transform) {
if (transform == null) return identity;
var x0,
y0,
kx = transform.scale[0],
ky = transform.scale[1],
dx = transform.translate[0],
dy = transform.translate[1];
return function(input, i) {
if (!i) x0 = y0 = 0;
var j = 2,
n = input.length,
output = new Array(n),
x1 = Math.round((input[0] - dx) / kx),
y1 = Math.round((input[1] - dy) / ky);
output[0] = x1 - x0, x0 = x1;
output[1] = y1 - y0, y0 = y1;
while (j < n) output[j] = input[j], ++j;
return output;
};
}
function quantize(topology, transform) {
if (topology.transform) throw new Error("already quantized");
if (!transform || !transform.scale) {
if (!((n = Math.floor(transform)) >= 2)) throw new Error("n must be ≥2");
box = topology.bbox || bbox(topology);
var x0 = box[0], y0 = box[1], x1 = box[2], y1 = box[3], n;
transform = {scale: [x1 - x0 ? (x1 - x0) / (n - 1) : 1, y1 - y0 ? (y1 - y0) / (n - 1) : 1], translate: [x0, y0]};
} else {
box = topology.bbox;
}
var t = untransform(transform), box, key, inputs = topology.objects, outputs = {};
function quantizePoint(point) {
return t(point);
}
function quantizeGeometry(input) {
var output;
switch (input.type) {
case "GeometryCollection": output = {type: "GeometryCollection", geometries: input.geometries.map(quantizeGeometry)}; break;
case "Point": output = {type: "Point", coordinates: quantizePoint(input.coordinates)}; break;
case "MultiPoint": output = {type: "MultiPoint", coordinates: input.coordinates.map(quantizePoint)}; break;
default: return input;
}
if (input.id != null) output.id = input.id;
if (input.bbox != null) output.bbox = input.bbox;
if (input.properties != null) output.properties = input.properties;
return output;
}
function quantizeArc(input) {
var i = 0, j = 1, n = input.length, p, output = new Array(n); // pessimistic
output[0] = t(input[0], 0);
while (++i < n) if ((p = t(input[i], i))[0] || p[1]) output[j++] = p; // non-coincident points
if (j === 1) output[j++] = [0, 0]; // an arc must have at least two points
output.length = j;
return output;
}
for (key in inputs) outputs[key] = quantizeGeometry(inputs[key]);
return {
type: "Topology",
bbox: box,
transform: transform,
objects: outputs,
arcs: topology.arcs.map(quantizeArc)
};
}
exports.bbox = bbox;
exports.feature = feature;
exports.merge = merge;
exports.mergeArcs = mergeArcs;
exports.mesh = mesh;
exports.meshArcs = meshArcs;
exports.neighbors = neighbors;
exports.quantize = quantize;
exports.transform = transform;
exports.untransform = untransform;
Object.defineProperty(exports, '__esModule', { value: true });
}));

2
frontend/node_modules/topojson-client/dist/topojson-client.min.js generated vendored Normal file
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419
frontend/node_modules/topojson-client/node_modules/commander/CHANGELOG.md generated vendored Normal file
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@@ -0,0 +1,419 @@
2.20.3 / 2019-10-11
==================
* Support Node.js 0.10 (Revert #1059)
* Ran "npm unpublish commander@2.20.2". There is no 2.20.2.
2.20.1 / 2019-09-29
==================
* Improve executable subcommand tracking
* Update dev dependencies
2.20.0 / 2019-04-02
==================
* fix: resolve symbolic links completely when hunting for subcommands (#935)
* Update index.d.ts (#930)
* Update Readme.md (#924)
* Remove --save option as it isn't required anymore (#918)
* Add link to the license file (#900)
* Added example of receiving args from options (#858)
* Added missing semicolon (#882)
* Add extension to .eslintrc (#876)
2.19.0 / 2018-10-02
==================
* Removed newline after Options and Commands headers (#864)
* Bugfix - Error output (#862)
* Fix to change default value to string (#856)
2.18.0 / 2018-09-07
==================
* Standardize help output (#853)
* chmod 644 travis.yml (#851)
* add support for execute typescript subcommand via ts-node (#849)
2.17.1 / 2018-08-07
==================
* Fix bug in command emit (#844)
2.17.0 / 2018-08-03
==================
* fixed newline output after help information (#833)
* Fix to emit the action even without command (#778)
* npm update (#823)
2.16.0 / 2018-06-29
==================
* Remove Makefile and `test/run` (#821)
* Make 'npm test' run on Windows (#820)
* Add badge to display install size (#807)
* chore: cache node_modules (#814)
* chore: remove Node.js 4 (EOL), add Node.js 10 (#813)
* fixed typo in readme (#812)
* Fix types (#804)
* Update eslint to resolve vulnerabilities in lodash (#799)
* updated readme with custom event listeners. (#791)
* fix tests (#794)
2.15.0 / 2018-03-07
==================
* Update downloads badge to point to graph of downloads over time instead of duplicating link to npm
* Arguments description
2.14.1 / 2018-02-07
==================
* Fix typing of help function
2.14.0 / 2018-02-05
==================
* only register the option:version event once
* Fixes issue #727: Passing empty string for option on command is set to undefined
* enable eqeqeq rule
* resolves #754 add linter configuration to project
* resolves #560 respect custom name for version option
* document how to override the version flag
* document using options per command
2.13.0 / 2018-01-09
==================
* Do not print default for --no-
* remove trailing spaces in command help
* Update CI's Node.js to LTS and latest version
* typedefs: Command and Option types added to commander namespace
2.12.2 / 2017-11-28
==================
* fix: typings are not shipped
2.12.1 / 2017-11-23
==================
* Move @types/node to dev dependency
2.12.0 / 2017-11-22
==================
* add attributeName() method to Option objects
* Documentation updated for options with --no prefix
* typings: `outputHelp` takes a string as the first parameter
* typings: use overloads
* feat(typings): update to match js api
* Print default value in option help
* Fix translation error
* Fail when using same command and alias (#491)
* feat(typings): add help callback
* fix bug when description is add after command with options (#662)
* Format js code
* Rename History.md to CHANGELOG.md (#668)
* feat(typings): add typings to support TypeScript (#646)
* use current node
2.11.0 / 2017-07-03
==================
* Fix help section order and padding (#652)
* feature: support for signals to subcommands (#632)
* Fixed #37, --help should not display first (#447)
* Fix translation errors. (#570)
* Add package-lock.json
* Remove engines
* Upgrade package version
* Prefix events to prevent conflicts between commands and options (#494)
* Removing dependency on graceful-readlink
* Support setting name in #name function and make it chainable
* Add .vscode directory to .gitignore (Visual Studio Code metadata)
* Updated link to ruby commander in readme files
2.10.0 / 2017-06-19
==================
* Update .travis.yml. drop support for older node.js versions.
* Fix require arguments in README.md
* On SemVer you do not start from 0.0.1
* Add missing semi colon in readme
* Add save param to npm install
* node v6 travis test
* Update Readme_zh-CN.md
* Allow literal '--' to be passed-through as an argument
* Test subcommand alias help
* link build badge to master branch
* Support the alias of Git style sub-command
* added keyword commander for better search result on npm
* Fix Sub-Subcommands
* test node.js stable
* Fixes TypeError when a command has an option called `--description`
* Update README.md to make it beginner friendly and elaborate on the difference between angled and square brackets.
* Add chinese Readme file
2.9.0 / 2015-10-13
==================
* Add option `isDefault` to set default subcommand #415 @Qix-
* Add callback to allow filtering or post-processing of help text #434 @djulien
* Fix `undefined` text in help information close #414 #416 @zhiyelee
2.8.1 / 2015-04-22
==================
* Back out `support multiline description` Close #396 #397
2.8.0 / 2015-04-07
==================
* Add `process.execArg` support, execution args like `--harmony` will be passed to sub-commands #387 @DigitalIO @zhiyelee
* Fix bug in Git-style sub-commands #372 @zhiyelee
* Allow commands to be hidden from help #383 @tonylukasavage
* When git-style sub-commands are in use, yet none are called, display help #382 @claylo
* Add ability to specify arguments syntax for top-level command #258 @rrthomas
* Support multiline descriptions #208 @zxqfox
2.7.1 / 2015-03-11
==================
* Revert #347 (fix collisions when option and first arg have same name) which causes a bug in #367.
2.7.0 / 2015-03-09
==================
* Fix git-style bug when installed globally. Close #335 #349 @zhiyelee
* Fix collisions when option and first arg have same name. Close #346 #347 @tonylukasavage
* Add support for camelCase on `opts()`. Close #353 @nkzawa
* Add node.js 0.12 and io.js to travis.yml
* Allow RegEx options. #337 @palanik
* Fixes exit code when sub-command failing. Close #260 #332 @pirelenito
* git-style `bin` files in $PATH make sense. Close #196 #327 @zhiyelee
2.6.0 / 2014-12-30
==================
* added `Command#allowUnknownOption` method. Close #138 #318 @doozr @zhiyelee
* Add application description to the help msg. Close #112 @dalssoft
2.5.1 / 2014-12-15
==================
* fixed two bugs incurred by variadic arguments. Close #291 @Quentin01 #302 @zhiyelee
2.5.0 / 2014-10-24
==================
* add support for variadic arguments. Closes #277 @whitlockjc
2.4.0 / 2014-10-17
==================
* fixed a bug on executing the coercion function of subcommands option. Closes #270
* added `Command.prototype.name` to retrieve command name. Closes #264 #266 @tonylukasavage
* added `Command.prototype.opts` to retrieve all the options as a simple object of key-value pairs. Closes #262 @tonylukasavage
* fixed a bug on subcommand name. Closes #248 @jonathandelgado
* fixed function normalize doesn’t honor option terminator. Closes #216 @abbr
2.3.0 / 2014-07-16
==================
* add command alias'. Closes PR #210
* fix: Typos. Closes #99
* fix: Unused fs module. Closes #217
2.2.0 / 2014-03-29
==================
* add passing of previous option value
* fix: support subcommands on windows. Closes #142
* Now the defaultValue passed as the second argument of the coercion function.
2.1.0 / 2013-11-21
==================
* add: allow cflag style option params, unit test, fixes #174
2.0.0 / 2013-07-18
==================
* remove input methods (.prompt, .confirm, etc)
1.3.2 / 2013-07-18
==================
* add support for sub-commands to co-exist with the original command
1.3.1 / 2013-07-18
==================
* add quick .runningCommand hack so you can opt-out of other logic when running a sub command
1.3.0 / 2013-07-09
==================
* add EACCES error handling
* fix sub-command --help
1.2.0 / 2013-06-13
==================
* allow "-" hyphen as an option argument
* support for RegExp coercion
1.1.1 / 2012-11-20
==================
* add more sub-command padding
* fix .usage() when args are present. Closes #106
1.1.0 / 2012-11-16
==================
* add git-style executable subcommand support. Closes #94
1.0.5 / 2012-10-09
==================
* fix `--name` clobbering. Closes #92
* fix examples/help. Closes #89
1.0.4 / 2012-09-03
==================
* add `outputHelp()` method.
1.0.3 / 2012-08-30
==================
* remove invalid .version() defaulting
1.0.2 / 2012-08-24
==================
* add `--foo=bar` support [arv]
* fix password on node 0.8.8. Make backward compatible with 0.6 [focusaurus]
1.0.1 / 2012-08-03
==================
* fix issue #56
* fix tty.setRawMode(mode) was moved to tty.ReadStream#setRawMode() (i.e. process.stdin.setRawMode())
1.0.0 / 2012-07-05
==================
* add support for optional option descriptions
* add defaulting of `.version()` to package.json's version
0.6.1 / 2012-06-01
==================
* Added: append (yes or no) on confirmation
* Added: allow node.js v0.7.x
0.6.0 / 2012-04-10
==================
* Added `.prompt(obj, callback)` support. Closes #49
* Added default support to .choose(). Closes #41
* Fixed the choice example
0.5.1 / 2011-12-20
==================
* Fixed `password()` for recent nodes. Closes #36
0.5.0 / 2011-12-04
==================
* Added sub-command option support [itay]
0.4.3 / 2011-12-04
==================
* Fixed custom help ordering. Closes #32
0.4.2 / 2011-11-24
==================
* Added travis support
* Fixed: line-buffered input automatically trimmed. Closes #31
0.4.1 / 2011-11-18
==================
* Removed listening for "close" on --help
0.4.0 / 2011-11-15
==================
* Added support for `--`. Closes #24
0.3.3 / 2011-11-14
==================
* Fixed: wait for close event when writing help info [Jerry Hamlet]
0.3.2 / 2011-11-01
==================
* Fixed long flag definitions with values [felixge]
0.3.1 / 2011-10-31
==================
* Changed `--version` short flag to `-V` from `-v`
* Changed `.version()` so it's configurable [felixge]
0.3.0 / 2011-10-31
==================
* Added support for long flags only. Closes #18
0.2.1 / 2011-10-24
==================
* "node": ">= 0.4.x < 0.7.0". Closes #20
0.2.0 / 2011-09-26
==================
* Allow for defaults that are not just boolean. Default peassignment only occurs for --no-*, optional, and required arguments. [Jim Isaacs]
0.1.0 / 2011-08-24
==================
* Added support for custom `--help` output
0.0.5 / 2011-08-18
==================
* Changed: when the user enters nothing prompt for password again
* Fixed issue with passwords beginning with numbers [NuckChorris]
0.0.4 / 2011-08-15
==================
* Fixed `Commander#args`
0.0.3 / 2011-08-15
==================
* Added default option value support
0.0.2 / 2011-08-15
==================
* Added mask support to `Command#password(str[, mask], fn)`
* Added `Command#password(str, fn)`
0.0.1 / 2010-01-03
==================
* Initial release

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(The MIT License)
Copyright (c) 2011 TJ Holowaychuk <tj@vision-media.ca>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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# Commander.js
[![Build Status](https://api.travis-ci.org/tj/commander.js.svg?branch=master)](http://travis-ci.org/tj/commander.js)
[![NPM Version](http://img.shields.io/npm/v/commander.svg?style=flat)](https://www.npmjs.org/package/commander)
[![NPM Downloads](https://img.shields.io/npm/dm/commander.svg?style=flat)](https://npmcharts.com/compare/commander?minimal=true)
[![Install Size](https://packagephobia.now.sh/badge?p=commander)](https://packagephobia.now.sh/result?p=commander)
[![Join the chat at https://gitter.im/tj/commander.js](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/tj/commander.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
The complete solution for [node.js](http://nodejs.org) command-line interfaces, inspired by Ruby's [commander](https://github.com/commander-rb/commander).
[API documentation](http://tj.github.com/commander.js/)
## Installation
$ npm install commander
## Option parsing
Options with commander are defined with the `.option()` method, also serving as documentation for the options. The example below parses args and options from `process.argv`, leaving remaining args as the `program.args` array which were not consumed by options.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.option('-p, --peppers', 'Add peppers')
.option('-P, --pineapple', 'Add pineapple')
.option('-b, --bbq-sauce', 'Add bbq sauce')
.option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')
.parse(process.argv);
console.log('you ordered a pizza with:');
if (program.peppers) console.log(' - peppers');
if (program.pineapple) console.log(' - pineapple');
if (program.bbqSauce) console.log(' - bbq');
console.log(' - %s cheese', program.cheese);
```
Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc.
Note that multi-word options starting with `--no` prefix negate the boolean value of the following word. For example, `--no-sauce` sets the value of `program.sauce` to false.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.option('--no-sauce', 'Remove sauce')
.parse(process.argv);
console.log('you ordered a pizza');
if (program.sauce) console.log(' with sauce');
else console.log(' without sauce');
```
To get string arguments from options you will need to use angle brackets <> for required inputs or square brackets [] for optional inputs.
e.g. ```.option('-m --myarg [myVar]', 'my super cool description')```
Then to access the input if it was passed in.
e.g. ```var myInput = program.myarg```
**NOTE**: If you pass a argument without using brackets the example above will return true and not the value passed in.
## Version option
Calling the `version` implicitly adds the `-V` and `--version` options to the command.
When either of these options is present, the command prints the version number and exits.
$ ./examples/pizza -V
0.0.1
If you want your program to respond to the `-v` option instead of the `-V` option, simply pass custom flags to the `version` method using the same syntax as the `option` method.
```js
program
.version('0.0.1', '-v, --version')
```
The version flags can be named anything, but the long option is required.
## Command-specific options
You can attach options to a command.
```js
#!/usr/bin/env node
var program = require('commander');
program
.command('rm <dir>')
.option('-r, --recursive', 'Remove recursively')
.action(function (dir, cmd) {
console.log('remove ' + dir + (cmd.recursive ? ' recursively' : ''))
})
program.parse(process.argv)
```
A command's options are validated when the command is used. Any unknown options will be reported as an error. However, if an action-based command does not define an action, then the options are not validated.
## Coercion
```js
function range(val) {
return val.split('..').map(Number);
}
function list(val) {
return val.split(',');
}
function collect(val, memo) {
memo.push(val);
return memo;
}
function increaseVerbosity(v, total) {
return total + 1;
}
program
.version('0.1.0')
.usage('[options] <file ...>')
.option('-i, --integer <n>', 'An integer argument', parseInt)
.option('-f, --float <n>', 'A float argument', parseFloat)
.option('-r, --range <a>..<b>', 'A range', range)
.option('-l, --list <items>', 'A list', list)
.option('-o, --optional [value]', 'An optional value')
.option('-c, --collect [value]', 'A repeatable value', collect, [])
.option('-v, --verbose', 'A value that can be increased', increaseVerbosity, 0)
.parse(process.argv);
console.log(' int: %j', program.integer);
console.log(' float: %j', program.float);
console.log(' optional: %j', program.optional);
program.range = program.range || [];
console.log(' range: %j..%j', program.range[0], program.range[1]);
console.log(' list: %j', program.list);
console.log(' collect: %j', program.collect);
console.log(' verbosity: %j', program.verbose);
console.log(' args: %j', program.args);
```
## Regular Expression
```js
program
.version('0.1.0')
.option('-s --size <size>', 'Pizza size', /^(large|medium|small)$/i, 'medium')
.option('-d --drink [drink]', 'Drink', /^(coke|pepsi|izze)$/i)
.parse(process.argv);
console.log(' size: %j', program.size);
console.log(' drink: %j', program.drink);
```
## Variadic arguments
The last argument of a command can be variadic, and only the last argument. To make an argument variadic you have to
append `...` to the argument name. Here is an example:
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.command('rmdir <dir> [otherDirs...]')
.action(function (dir, otherDirs) {
console.log('rmdir %s', dir);
if (otherDirs) {
otherDirs.forEach(function (oDir) {
console.log('rmdir %s', oDir);
});
}
});
program.parse(process.argv);
```
An `Array` is used for the value of a variadic argument. This applies to `program.args` as well as the argument passed
to your action as demonstrated above.
## Specify the argument syntax
```js
#!/usr/bin/env node
var program = require('commander');
program
.version('0.1.0')
.arguments('<cmd> [env]')
.action(function (cmd, env) {
cmdValue = cmd;
envValue = env;
});
program.parse(process.argv);
if (typeof cmdValue === 'undefined') {
console.error('no command given!');
process.exit(1);
}
console.log('command:', cmdValue);
console.log('environment:', envValue || "no environment given");
```
Angled brackets (e.g. `<cmd>`) indicate required input. Square brackets (e.g. `[env]`) indicate optional input.
## Git-style sub-commands
```js
// file: ./examples/pm
var program = require('commander');
program
.version('0.1.0')
.command('install [name]', 'install one or more packages')
.command('search [query]', 'search with optional query')
.command('list', 'list packages installed', {isDefault: true})
.parse(process.argv);
```
When `.command()` is invoked with a description argument, no `.action(callback)` should be called to handle sub-commands, otherwise there will be an error. This tells commander that you're going to use separate executables for sub-commands, much like `git(1)` and other popular tools.
The commander will try to search the executables in the directory of the entry script (like `./examples/pm`) with the name `program-command`, like `pm-install`, `pm-search`.
Options can be passed with the call to `.command()`. Specifying `true` for `opts.noHelp` will remove the subcommand from the generated help output. Specifying `true` for `opts.isDefault` will run the subcommand if no other subcommand is specified.
If the program is designed to be installed globally, make sure the executables have proper modes, like `755`.
### `--harmony`
You can enable `--harmony` option in two ways:
* Use `#! /usr/bin/env node --harmony` in the sub-commands scripts. Note some os version don’t support this pattern.
* Use the `--harmony` option when call the command, like `node --harmony examples/pm publish`. The `--harmony` option will be preserved when spawning sub-command process.
## Automated --help
The help information is auto-generated based on the information commander already knows about your program, so the following `--help` info is for free:
```
$ ./examples/pizza --help
Usage: pizza [options]
An application for pizzas ordering
Options:
-h, --help output usage information
-V, --version output the version number
-p, --peppers Add peppers
-P, --pineapple Add pineapple
-b, --bbq Add bbq sauce
-c, --cheese <type> Add the specified type of cheese [marble]
-C, --no-cheese You do not want any cheese
```
## Custom help
You can display arbitrary `-h, --help` information
by listening for "--help". Commander will automatically
exit once you are done so that the remainder of your program
does not execute causing undesired behaviors, for example
in the following executable "stuff" will not output when
`--help` is used.
```js
#!/usr/bin/env node
/**
* Module dependencies.
*/
var program = require('commander');
program
.version('0.1.0')
.option('-f, --foo', 'enable some foo')
.option('-b, --bar', 'enable some bar')
.option('-B, --baz', 'enable some baz');
// must be before .parse() since
// node's emit() is immediate
program.on('--help', function(){
console.log('')
console.log('Examples:');
console.log(' $ custom-help --help');
console.log(' $ custom-help -h');
});
program.parse(process.argv);
console.log('stuff');
```
Yields the following help output when `node script-name.js -h` or `node script-name.js --help` are run:
```
Usage: custom-help [options]
Options:
-h, --help output usage information
-V, --version output the version number
-f, --foo enable some foo
-b, --bar enable some bar
-B, --baz enable some baz
Examples:
$ custom-help --help
$ custom-help -h
```
## .outputHelp(cb)
Output help information without exiting.
Optional callback cb allows post-processing of help text before it is displayed.
If you want to display help by default (e.g. if no command was provided), you can use something like:
```js
var program = require('commander');
var colors = require('colors');
program
.version('0.1.0')
.command('getstream [url]', 'get stream URL')
.parse(process.argv);
if (!process.argv.slice(2).length) {
program.outputHelp(make_red);
}
function make_red(txt) {
return colors.red(txt); //display the help text in red on the console
}
```
## .help(cb)
Output help information and exit immediately.
Optional callback cb allows post-processing of help text before it is displayed.
## Custom event listeners
You can execute custom actions by listening to command and option events.
```js
program.on('option:verbose', function () {
process.env.VERBOSE = this.verbose;
});
// error on unknown commands
program.on('command:*', function () {
console.error('Invalid command: %s\nSee --help for a list of available commands.', program.args.join(' '));
process.exit(1);
});
```
## Examples
```js
var program = require('commander');
program
.version('0.1.0')
.option('-C, --chdir <path>', 'change the working directory')
.option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
.option('-T, --no-tests', 'ignore test hook');
program
.command('setup [env]')
.description('run setup commands for all envs')
.option("-s, --setup_mode [mode]", "Which setup mode to use")
.action(function(env, options){
var mode = options.setup_mode || "normal";
env = env || 'all';
console.log('setup for %s env(s) with %s mode', env, mode);
});
program
.command('exec <cmd>')
.alias('ex')
.description('execute the given remote cmd')
.option("-e, --exec_mode <mode>", "Which exec mode to use")
.action(function(cmd, options){
console.log('exec "%s" using %s mode', cmd, options.exec_mode);
}).on('--help', function() {
console.log('');
console.log('Examples:');
console.log('');
console.log(' $ deploy exec sequential');
console.log(' $ deploy exec async');
});
program
.command('*')
.action(function(env){
console.log('deploying "%s"', env);
});
program.parse(process.argv);
```
More Demos can be found in the [examples](https://github.com/tj/commander.js/tree/master/examples) directory.
## License
[MIT](https://github.com/tj/commander.js/blob/master/LICENSE)

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{
"name": "commander",
"version": "2.20.3",
"description": "the complete solution for node.js command-line programs",
"keywords": [
"commander",
"command",
"option",
"parser"
],
"author": "TJ Holowaychuk <tj@vision-media.ca>",
"license": "MIT",
"repository": {
"type": "git",
"url": "https://github.com/tj/commander.js.git"
},
"scripts": {
"lint": "eslint index.js",
"test": "node test/run.js && npm run test-typings",
"test-typings": "tsc -p tsconfig.json"
},
"main": "index",
"files": [
"index.js",
"typings/index.d.ts"
],
"dependencies": {},
"devDependencies": {
"@types/node": "^12.7.8",
"eslint": "^6.4.0",
"should": "^13.2.3",
"sinon": "^7.5.0",
"standard": "^14.3.1",
"ts-node": "^8.4.1",
"typescript": "^3.6.3"
},
"typings": "typings/index.d.ts"
}

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// Type definitions for commander 2.11
// Project: https://github.com/visionmedia/commander.js
// Definitions by: Alan Agius <https://github.com/alan-agius4>, Marcelo Dezem <https://github.com/mdezem>, vvakame <https://github.com/vvakame>, Jules Randolph <https://github.com/sveinburne>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
declare namespace local {
class Option {
flags: string;
required: boolean;
optional: boolean;
bool: boolean;
short?: string;
long: string;
description: string;
/**
* Initialize a new `Option` with the given `flags` and `description`.
*
* @param {string} flags
* @param {string} [description]
*/
constructor(flags: string, description?: string);
}
class Command extends NodeJS.EventEmitter {
[key: string]: any;
args: string[];
/**
* Initialize a new `Command`.
*
* @param {string} [name]
*/
constructor(name?: string);
/**
* Set the program version to `str`.
*
* This method auto-registers the "-V, --version" flag
* which will print the version number when passed.
*
* @param {string} str
* @param {string} [flags]
* @returns {Command} for chaining
*/
version(str: string, flags?: string): Command;
/**
* Add command `name`.
*
* The `.action()` callback is invoked when the
* command `name` is specified via __ARGV__,
* and the remaining arguments are applied to the
* function for access.
*
* When the `name` is "*" an un-matched command
* will be passed as the first arg, followed by
* the rest of __ARGV__ remaining.
*
* @example
* program
* .version('0.0.1')
* .option('-C, --chdir <path>', 'change the working directory')
* .option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
* .option('-T, --no-tests', 'ignore test hook')
*
* program
* .command('setup')
* .description('run remote setup commands')
* .action(function() {
* console.log('setup');
* });
*
* program
* .command('exec <cmd>')
* .description('run the given remote command')
* .action(function(cmd) {
* console.log('exec "%s"', cmd);
* });
*
* program
* .command('teardown <dir> [otherDirs...]')
* .description('run teardown commands')
* .action(function(dir, otherDirs) {
* console.log('dir "%s"', dir);
* if (otherDirs) {
* otherDirs.forEach(function (oDir) {
* console.log('dir "%s"', oDir);
* });
* }
* });
*
* program
* .command('*')
* .description('deploy the given env')
* .action(function(env) {
* console.log('deploying "%s"', env);
* });
*
* program.parse(process.argv);
*
* @param {string} name
* @param {string} [desc] for git-style sub-commands
* @param {CommandOptions} [opts] command options
* @returns {Command} the new command
*/
command(name: string, desc?: string, opts?: commander.CommandOptions): Command;
/**
* Define argument syntax for the top-level command.
*
* @param {string} desc
* @returns {Command} for chaining
*/
arguments(desc: string): Command;
/**
* Parse expected `args`.
*
* For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`.
*
* @param {string[]} args
* @returns {Command} for chaining
*/
parseExpectedArgs(args: string[]): Command;
/**
* Register callback `fn` for the command.
*
* @example
* program
* .command('help')
* .description('display verbose help')
* .action(function() {
* // output help here
* });
*
* @param {(...args: any[]) => void} fn
* @returns {Command} for chaining
*/
action(fn: (...args: any[]) => void): Command;
/**
* Define option with `flags`, `description` and optional
* coercion `fn`.
*
* The `flags` string should contain both the short and long flags,
* separated by comma, a pipe or space. The following are all valid
* all will output this way when `--help` is used.
*
* "-p, --pepper"
* "-p|--pepper"
* "-p --pepper"
*
* @example
* // simple boolean defaulting to false
* program.option('-p, --pepper', 'add pepper');
*
* --pepper
* program.pepper
* // => Boolean
*
* // simple boolean defaulting to true
* program.option('-C, --no-cheese', 'remove cheese');
*
* program.cheese
* // => true
*
* --no-cheese
* program.cheese
* // => false
*
* // required argument
* program.option('-C, --chdir <path>', 'change the working directory');
*
* --chdir /tmp
* program.chdir
* // => "/tmp"
*
* // optional argument
* program.option('-c, --cheese [type]', 'add cheese [marble]');
*
* @param {string} flags
* @param {string} [description]
* @param {((arg1: any, arg2: any) => void) | RegExp} [fn] function or default
* @param {*} [defaultValue]
* @returns {Command} for chaining
*/
option(flags: string, description?: string, fn?: ((arg1: any, arg2: any) => void) | RegExp, defaultValue?: any): Command;
option(flags: string, description?: string, defaultValue?: any): Command;
/**
* Allow unknown options on the command line.
*
* @param {boolean} [arg] if `true` or omitted, no error will be thrown for unknown options.
* @returns {Command} for chaining
*/
allowUnknownOption(arg?: boolean): Command;
/**
* Parse `argv`, settings options and invoking commands when defined.
*
* @param {string[]} argv
* @returns {Command} for chaining
*/
parse(argv: string[]): Command;
/**
* Parse options from `argv` returning `argv` void of these options.
*
* @param {string[]} argv
* @returns {ParseOptionsResult}
*/
parseOptions(argv: string[]): commander.ParseOptionsResult;
/**
* Return an object containing options as key-value pairs
*
* @returns {{[key: string]: any}}
*/
opts(): { [key: string]: any };
/**
* Set the description to `str`.
*
* @param {string} str
* @param {{[argName: string]: string}} argsDescription
* @return {(Command | string)}
*/
description(str: string, argsDescription?: {[argName: string]: string}): Command;
description(): string;
/**
* Set an alias for the command.
*
* @param {string} alias
* @return {(Command | string)}
*/
alias(alias: string): Command;
alias(): string;
/**
* Set or get the command usage.
*
* @param {string} str
* @return {(Command | string)}
*/
usage(str: string): Command;
usage(): string;
/**
* Set the name of the command.
*
* @param {string} str
* @return {Command}
*/
name(str: string): Command;
/**
* Get the name of the command.
*
* @return {string}
*/
name(): string;
/**
* Output help information for this command.
*
* @param {(str: string) => string} [cb]
*/
outputHelp(cb?: (str: string) => string): void;
/** Output help information and exit.
*
* @param {(str: string) => string} [cb]
*/
help(cb?: (str: string) => string): never;
}
}
declare namespace commander {
type Command = local.Command
type Option = local.Option
interface CommandOptions {
noHelp?: boolean;
isDefault?: boolean;
}
interface ParseOptionsResult {
args: string[];
unknown: string[];
}
interface CommanderStatic extends Command {
Command: typeof local.Command;
Option: typeof local.Option;
CommandOptions: CommandOptions;
ParseOptionsResult: ParseOptionsResult;
}
}
declare const commander: commander.CommanderStatic;
export = commander;

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{
"name": "topojson-client",
"version": "3.1.0",
"description": "Manipulate TopoJSON and convert it to GeoJSON.",
"keywords": [
"topojson",
"topology",
"geojson"
],
"homepage": "https://github.com/topojson/topojson-client",
"license": "ISC",
"author": {
"name": "Mike Bostock",
"url": "https://bost.ocks.org/mike"
},
"main": "dist/topojson-client.js",
"unpkg": "dist/topojson-client.min.js",
"jsdelivr": "dist/topojson-client.min.js",
"module": "src/index.js",
"repository": {
"type": "git",
"url": "https://github.com/topojson/topojson-client.git"
},
"bin": {
"topo2geo": "bin/topo2geo",
"topomerge": "bin/topomerge",
"topoquantize": "bin/topoquantize"
},
"files": [
"bin/topo*",
"dist/**/*.js",
"src/**/*.js"
],
"scripts": {
"pretest": "rollup -c",
"test": "tape 'test/**/*-test.js' && eslint src test",
"prepublishOnly": "rm -rf dist && yarn test",
"postpublish": "git push && git push --tags && zip -j dist/${npm_package_name}.zip -- LICENSE README.md dist/${npm_package_name}.js dist/${npm_package_name}.min.js"
},
"dependencies": {
"commander": "2"
},
"devDependencies": {
"eslint": "6",
"rollup": "1",
"rollup-plugin-terser": "5",
"tape": "4"
}
}

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frontend/node_modules/topojson-client/src/bbox.js generated vendored Normal file
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import transform from "./transform.js";
export default function(topology) {
var t = transform(topology.transform), key,
x0 = Infinity, y0 = x0, x1 = -x0, y1 = -x0;
function bboxPoint(p) {
p = t(p);
if (p[0] < x0) x0 = p[0];
if (p[0] > x1) x1 = p[0];
if (p[1] < y0) y0 = p[1];
if (p[1] > y1) y1 = p[1];
}
function bboxGeometry(o) {
switch (o.type) {
case "GeometryCollection": o.geometries.forEach(bboxGeometry); break;
case "Point": bboxPoint(o.coordinates); break;
case "MultiPoint": o.coordinates.forEach(bboxPoint); break;
}
}
topology.arcs.forEach(function(arc) {
var i = -1, n = arc.length, p;
while (++i < n) {
p = t(arc[i], i);
if (p[0] < x0) x0 = p[0];
if (p[0] > x1) x1 = p[0];
if (p[1] < y0) y0 = p[1];
if (p[1] > y1) y1 = p[1];
}
});
for (key in topology.objects) {
bboxGeometry(topology.objects[key]);
}
return [x0, y0, x1, y1];
}

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frontend/node_modules/topojson-client/src/bisect.js generated vendored Normal file
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export default function(a, x) {
var lo = 0, hi = a.length;
while (lo < hi) {
var mid = lo + hi >>> 1;
if (a[mid] < x) lo = mid + 1;
else hi = mid;
}
return lo;
}

70
frontend/node_modules/topojson-client/src/feature.js generated vendored Normal file
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import reverse from "./reverse.js";
import transform from "./transform.js";
export default function(topology, o) {
if (typeof o === "string") o = topology.objects[o];
return o.type === "GeometryCollection"
? {type: "FeatureCollection", features: o.geometries.map(function(o) { return feature(topology, o); })}
: feature(topology, o);
}
function feature(topology, o) {
var id = o.id,
bbox = o.bbox,
properties = o.properties == null ? {} : o.properties,
geometry = object(topology, o);
return id == null && bbox == null ? {type: "Feature", properties: properties, geometry: geometry}
: bbox == null ? {type: "Feature", id: id, properties: properties, geometry: geometry}
: {type: "Feature", id: id, bbox: bbox, properties: properties, geometry: geometry};
}
export function object(topology, o) {
var transformPoint = transform(topology.transform),
arcs = topology.arcs;
function arc(i, points) {
if (points.length) points.pop();
for (var a = arcs[i < 0 ? ~i : i], k = 0, n = a.length; k < n; ++k) {
points.push(transformPoint(a[k], k));
}
if (i < 0) reverse(points, n);
}
function point(p) {
return transformPoint(p);
}
function line(arcs) {
var points = [];
for (var i = 0, n = arcs.length; i < n; ++i) arc(arcs[i], points);
if (points.length < 2) points.push(points[0]); // This should never happen per the specification.
return points;
}
function ring(arcs) {
var points = line(arcs);
while (points.length < 4) points.push(points[0]); // This may happen if an arc has only two points.
return points;
}
function polygon(arcs) {
return arcs.map(ring);
}
function geometry(o) {
var type = o.type, coordinates;
switch (type) {
case "GeometryCollection": return {type: type, geometries: o.geometries.map(geometry)};
case "Point": coordinates = point(o.coordinates); break;
case "MultiPoint": coordinates = o.coordinates.map(point); break;
case "LineString": coordinates = line(o.arcs); break;
case "MultiLineString": coordinates = o.arcs.map(line); break;
case "Polygon": coordinates = polygon(o.arcs); break;
case "MultiPolygon": coordinates = o.arcs.map(polygon); break;
default: return null;
}
return {type: type, coordinates: coordinates};
}
return geometry(o);
}

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export default function(x) {
return x;
}

8
frontend/node_modules/topojson-client/src/index.js generated vendored Normal file
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export {default as bbox} from "./bbox.js";
export {default as feature} from "./feature.js";
export {default as mesh, meshArcs} from "./mesh.js";
export {default as merge, mergeArcs} from "./merge.js";
export {default as neighbors} from "./neighbors.js";
export {default as quantize} from "./quantize.js";
export {default as transform} from "./transform.js";
export {default as untransform} from "./untransform.js";

103
frontend/node_modules/topojson-client/src/merge.js generated vendored Normal file
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import {object} from "./feature.js";
import stitch from "./stitch.js";
function planarRingArea(ring) {
var i = -1, n = ring.length, a, b = ring[n - 1], area = 0;
while (++i < n) a = b, b = ring[i], area += a[0] * b[1] - a[1] * b[0];
return Math.abs(area); // Note: doubled area!
}
export default function(topology) {
return object(topology, mergeArcs.apply(this, arguments));
}
export function mergeArcs(topology, objects) {
var polygonsByArc = {},
polygons = [],
groups = [];
objects.forEach(geometry);
function geometry(o) {
switch (o.type) {
case "GeometryCollection": o.geometries.forEach(geometry); break;
case "Polygon": extract(o.arcs); break;
case "MultiPolygon": o.arcs.forEach(extract); break;
}
}
function extract(polygon) {
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
(polygonsByArc[arc = arc < 0 ? ~arc : arc] || (polygonsByArc[arc] = [])).push(polygon);
});
});
polygons.push(polygon);
}
function area(ring) {
return planarRingArea(object(topology, {type: "Polygon", arcs: [ring]}).coordinates[0]);
}
polygons.forEach(function(polygon) {
if (!polygon._) {
var group = [],
neighbors = [polygon];
polygon._ = 1;
groups.push(group);
while (polygon = neighbors.pop()) {
group.push(polygon);
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
polygonsByArc[arc < 0 ? ~arc : arc].forEach(function(polygon) {
if (!polygon._) {
polygon._ = 1;
neighbors.push(polygon);
}
});
});
});
}
}
});
polygons.forEach(function(polygon) {
delete polygon._;
});
return {
type: "MultiPolygon",
arcs: groups.map(function(polygons) {
var arcs = [], n;
// Extract the exterior (unique) arcs.
polygons.forEach(function(polygon) {
polygon.forEach(function(ring) {
ring.forEach(function(arc) {
if (polygonsByArc[arc < 0 ? ~arc : arc].length < 2) {
arcs.push(arc);
}
});
});
});
// Stitch the arcs into one or more rings.
arcs = stitch(topology, arcs);
// If more than one ring is returned,
// at most one of these rings can be the exterior;
// choose the one with the greatest absolute area.
if ((n = arcs.length) > 1) {
for (var i = 1, k = area(arcs[0]), ki, t; i < n; ++i) {
if ((ki = area(arcs[i])) > k) {
t = arcs[0], arcs[0] = arcs[i], arcs[i] = t, k = ki;
}
}
}
return arcs;
}).filter(function(arcs) {
return arcs.length > 0;
})
};
}

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frontend/node_modules/topojson-client/src/mesh.js generated vendored Normal file
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import {object} from "./feature.js";
import stitch from "./stitch.js";
export default function(topology) {
return object(topology, meshArcs.apply(this, arguments));
}
export function meshArcs(topology, object, filter) {
var arcs, i, n;
if (arguments.length > 1) arcs = extractArcs(topology, object, filter);
else for (i = 0, arcs = new Array(n = topology.arcs.length); i < n; ++i) arcs[i] = i;
return {type: "MultiLineString", arcs: stitch(topology, arcs)};
}
function extractArcs(topology, object, filter) {
var arcs = [],
geomsByArc = [],
geom;
function extract0(i) {
var j = i < 0 ? ~i : i;
(geomsByArc[j] || (geomsByArc[j] = [])).push({i: i, g: geom});
}
function extract1(arcs) {
arcs.forEach(extract0);
}
function extract2(arcs) {
arcs.forEach(extract1);
}
function extract3(arcs) {
arcs.forEach(extract2);
}
function geometry(o) {
switch (geom = o, o.type) {
case "GeometryCollection": o.geometries.forEach(geometry); break;
case "LineString": extract1(o.arcs); break;
case "MultiLineString": case "Polygon": extract2(o.arcs); break;
case "MultiPolygon": extract3(o.arcs); break;
}
}
geometry(object);
geomsByArc.forEach(filter == null
? function(geoms) { arcs.push(geoms[0].i); }
: function(geoms) { if (filter(geoms[0].g, geoms[geoms.length - 1].g)) arcs.push(geoms[0].i); });
return arcs;
}

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frontend/node_modules/topojson-client/src/neighbors.js generated vendored Normal file
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import bisect from "./bisect.js";
export default function(objects) {
var indexesByArc = {}, // arc index -> array of object indexes
neighbors = objects.map(function() { return []; });
function line(arcs, i) {
arcs.forEach(function(a) {
if (a < 0) a = ~a;
var o = indexesByArc[a];
if (o) o.push(i);
else indexesByArc[a] = [i];
});
}
function polygon(arcs, i) {
arcs.forEach(function(arc) { line(arc, i); });
}
function geometry(o, i) {
if (o.type === "GeometryCollection") o.geometries.forEach(function(o) { geometry(o, i); });
else if (o.type in geometryType) geometryType[o.type](o.arcs, i);
}
var geometryType = {
LineString: line,
MultiLineString: polygon,
Polygon: polygon,
MultiPolygon: function(arcs, i) { arcs.forEach(function(arc) { polygon(arc, i); }); }
};
objects.forEach(geometry);
for (var i in indexesByArc) {
for (var indexes = indexesByArc[i], m = indexes.length, j = 0; j < m; ++j) {
for (var k = j + 1; k < m; ++k) {
var ij = indexes[j], ik = indexes[k], n;
if ((n = neighbors[ij])[i = bisect(n, ik)] !== ik) n.splice(i, 0, ik);
if ((n = neighbors[ik])[i = bisect(n, ij)] !== ij) n.splice(i, 0, ij);
}
}
}
return neighbors;
}

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frontend/node_modules/topojson-client/src/quantize.js generated vendored Normal file
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import bbox from "./bbox.js";
import untransform from "./untransform.js";
export default function(topology, transform) {
if (topology.transform) throw new Error("already quantized");
if (!transform || !transform.scale) {
if (!((n = Math.floor(transform)) >= 2)) throw new Error("n must be ≥2");
box = topology.bbox || bbox(topology);
var x0 = box[0], y0 = box[1], x1 = box[2], y1 = box[3], n;
transform = {scale: [x1 - x0 ? (x1 - x0) / (n - 1) : 1, y1 - y0 ? (y1 - y0) / (n - 1) : 1], translate: [x0, y0]};
} else {
box = topology.bbox;
}
var t = untransform(transform), box, key, inputs = topology.objects, outputs = {};
function quantizePoint(point) {
return t(point);
}
function quantizeGeometry(input) {
var output;
switch (input.type) {
case "GeometryCollection": output = {type: "GeometryCollection", geometries: input.geometries.map(quantizeGeometry)}; break;
case "Point": output = {type: "Point", coordinates: quantizePoint(input.coordinates)}; break;
case "MultiPoint": output = {type: "MultiPoint", coordinates: input.coordinates.map(quantizePoint)}; break;
default: return input;
}
if (input.id != null) output.id = input.id;
if (input.bbox != null) output.bbox = input.bbox;
if (input.properties != null) output.properties = input.properties;
return output;
}
function quantizeArc(input) {
var i = 0, j = 1, n = input.length, p, output = new Array(n); // pessimistic
output[0] = t(input[0], 0);
while (++i < n) if ((p = t(input[i], i))[0] || p[1]) output[j++] = p; // non-coincident points
if (j === 1) output[j++] = [0, 0]; // an arc must have at least two points
output.length = j;
return output;
}
for (key in inputs) outputs[key] = quantizeGeometry(inputs[key]);
return {
type: "Topology",
bbox: box,
transform: transform,
objects: outputs,
arcs: topology.arcs.map(quantizeArc)
};
}

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frontend/node_modules/topojson-client/src/reverse.js generated vendored Normal file
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export default function(array, n) {
var t, j = array.length, i = j - n;
while (i < --j) t = array[i], array[i++] = array[j], array[j] = t;
}

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frontend/node_modules/topojson-client/src/stitch.js generated vendored Normal file
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export default function(topology, arcs) {
var stitchedArcs = {},
fragmentByStart = {},
fragmentByEnd = {},
fragments = [],
emptyIndex = -1;
// Stitch empty arcs first, since they may be subsumed by other arcs.
arcs.forEach(function(i, j) {
var arc = topology.arcs[i < 0 ? ~i : i], t;
if (arc.length < 3 && !arc[1][0] && !arc[1][1]) {
t = arcs[++emptyIndex], arcs[emptyIndex] = i, arcs[j] = t;
}
});
arcs.forEach(function(i) {
var e = ends(i),
start = e[0],
end = e[1],
f, g;
if (f = fragmentByEnd[start]) {
delete fragmentByEnd[f.end];
f.push(i);
f.end = end;
if (g = fragmentByStart[end]) {
delete fragmentByStart[g.start];
var fg = g === f ? f : f.concat(g);
fragmentByStart[fg.start = f.start] = fragmentByEnd[fg.end = g.end] = fg;
} else {
fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
}
} else if (f = fragmentByStart[end]) {
delete fragmentByStart[f.start];
f.unshift(i);
f.start = start;
if (g = fragmentByEnd[start]) {
delete fragmentByEnd[g.end];
var gf = g === f ? f : g.concat(f);
fragmentByStart[gf.start = g.start] = fragmentByEnd[gf.end = f.end] = gf;
} else {
fragmentByStart[f.start] = fragmentByEnd[f.end] = f;
}
} else {
f = [i];
fragmentByStart[f.start = start] = fragmentByEnd[f.end = end] = f;
}
});
function ends(i) {
var arc = topology.arcs[i < 0 ? ~i : i], p0 = arc[0], p1;
if (topology.transform) p1 = [0, 0], arc.forEach(function(dp) { p1[0] += dp[0], p1[1] += dp[1]; });
else p1 = arc[arc.length - 1];
return i < 0 ? [p1, p0] : [p0, p1];
}
function flush(fragmentByEnd, fragmentByStart) {
for (var k in fragmentByEnd) {
var f = fragmentByEnd[k];
delete fragmentByStart[f.start];
delete f.start;
delete f.end;
f.forEach(function(i) { stitchedArcs[i < 0 ? ~i : i] = 1; });
fragments.push(f);
}
}
flush(fragmentByEnd, fragmentByStart);
flush(fragmentByStart, fragmentByEnd);
arcs.forEach(function(i) { if (!stitchedArcs[i < 0 ? ~i : i]) fragments.push([i]); });
return fragments;
}

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frontend/node_modules/topojson-client/src/transform.js generated vendored Normal file
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import identity from "./identity.js";
export default function(transform) {
if (transform == null) return identity;
var x0,
y0,
kx = transform.scale[0],
ky = transform.scale[1],
dx = transform.translate[0],
dy = transform.translate[1];
return function(input, i) {
if (!i) x0 = y0 = 0;
var j = 2, n = input.length, output = new Array(n);
output[0] = (x0 += input[0]) * kx + dx;
output[1] = (y0 += input[1]) * ky + dy;
while (j < n) output[j] = input[j], ++j;
return output;
};
}

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frontend/node_modules/topojson-client/src/untransform.js generated vendored Normal file
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import identity from "./identity.js";
export default function(transform) {
if (transform == null) return identity;
var x0,
y0,
kx = transform.scale[0],
ky = transform.scale[1],
dx = transform.translate[0],
dy = transform.translate[1];
return function(input, i) {
if (!i) x0 = y0 = 0;
var j = 2,
n = input.length,
output = new Array(n),
x1 = Math.round((input[0] - dx) / kx),
y1 = Math.round((input[1] - dy) / ky);
output[0] = x1 - x0, x0 = x1;
output[1] = y1 - y0, y0 = y1;
while (j < n) output[j] = input[j], ++j;
return output;
};
}