[New] shim/auto: add flatMap to Symbol.unscopables
[Deps] update call-bind, es-abstract
[actions] reuse common workflows
[actions] update codecov uploader
[Dev Deps] update eslint, @ljharb/eslint-config, @es-shims/api, aud, auto-changelog, object-inspect, safe-publish-latest, tape

1.2.5 / 2021-10-01

[readme] add github actions/codecov badges; update description; remove travis badge
[Deps] update call-bind, es-abstract; remove unused function-bind
[meta] use prepublishOnly, for npm 7+
[Dev Deps] update eslint, @ljharb/eslint-config, @es-shims/api, aud, has-strict-mode, object-inspect, tape
[actions] update workflows
[actions] use node/install instead of node/run; use codecov action
[Tests] increase coverage

1.2.4 / 2020-11-18

[Deps] update es-abstract; use call-bind where applicable
[meta] do not publish github action workflows
[Dev Deps] update eslint, @ljharb/eslint-config, object-inspect, tape; add aud
[Tests] migrate tests to Github Actions
[Tests] run nyc on all tests
[Tests] add implementation test; run es-shim-api in postlint; use tape runner
[actions] add "Allow Edits" workflow
[actions] switch Automatic Rebase workflow to pull_request_target event

1.2.3 / 2019-12-12

[Refactor] use split-up es-abstract (65% bundle size decrease)
[Deps] update es-abstract
[Dev Deps] update eslint, @ljharb/eslint-config, safe-publish-latest, object-inspect
[meta] add funding field
[Tests] use shared travis-ci configs
[actions] add automatic rebasing / merge commit blocking

1.2.2 / 2019-10-10

[Refactor] rename callback argument to mapperFunction, to match spec
[Deps] update es-abstract, define-properties
[Dev Deps] update eslint, @ljharb/eslint-config, covert, evalmd, object-inspect, safe-publish-latest, tape
[meta] create FUNDING.yml
[Tests] up to node v12.11, v11.15, v10.16, v9.11, v8.16, v6.17, v4.9; use nvm install-latest-npm
[Tests] use npx aud instead of nsp or npm audit with hoops

1.2.1 / 2018-02-23

[Fix] Temporarily hack main entry, so it's compatible with other resolvers
[Dev Deps] update eslint, nsp, tape
[Tests] up to node v9.6, v6.13

1.2.0 / 2018-01-18

[New] add "auto" entry point
[Fix] Move the receiver length check higher
[Fix] spec adjustments
[Refactor] adjust shouldFlatten logic
[Dev Deps] update eslint, object-inspect
[Tests] up to node v9.4

1.1.1 / 2017-11-29

[Fix] avoid an extra hole in the array (#1)
[Deps] update es-abstract
[Dev Deps] update eslint, nsp, object-inspect
[Tests] up to node v9.2, v8.9, v6.12; pin included builds to LTS

1.1.0 / 2017-10-03

[New] add explicit setting of “length” on target array
[Fix] FlattenIntoArray: add assertion that thisArg and mapperFunction are both passed together
[Tests] make coverage required

1.0.1 / 2017-10-02

Add readme

1.0.0 / 2017-10-01

Initial release

Readme

Source

array.prototype.flatmap

An ES2019 spec-compliant Array.prototype.flatMap shim/polyfill/replacement that works as far down as ES3.

This package implements the es-shim API interface. It works in an ES3-supported environment and complies with the spec.

Because Array.prototype.flatMap depends on a receiver (the this value), the main export takes the array to operate on as the first argument.

Getting started

npm install --save array.prototype.flatmap

Usage/Examples

var flatMap = require('array.prototype.flatmap');
var assert = require('assert');

var arr = [1, [2], [], 3];

var results = flatMap(arr, function (x, i) {
	assert.equal(x, arr[i]);
	return x;
});

assert.deepEqual(results, [1, 2, 3]);

var flatMap = require('array.prototype.flatmap');
var assert = require('assert');
/* when Array#flatMap is not present */
delete Array.prototype.flatMap;
var shimmedFlatMap = flatMap.shim();

var mapper = function (x) { return [x, 1]; };

assert.equal(shimmedFlatMap, flatMap.getPolyfill());
assert.deepEqual(arr.flatMap(mapper), flatMap(arr, mapper));

var flatMap = require('array.prototype.flatmap');
var assert = require('assert');
/* when Array#flatMap is present */
var shimmedIncludes = flatMap.shim();

var mapper = function (x) { return [x, 1]; };

assert.equal(shimmedIncludes, Array.prototype.flatMap);
assert.deepEqual(arr.flatMap(mapper), flatMap(arr, mapper));

Tests

Simply clone the repo, npm install, and run npm test

Keywords

FAQs

What is array.prototype.flatmap?

An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.

Is array.prototype.flatmap popular?

The npm package array.prototype.flatmap receives a total of 11,556,990 weekly downloads. As such, array.prototype.flatmap popularity was classified as popular.

Is array.prototype.flatmap well maintained?

We found that array.prototype.flatmap demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago.It has 1 open source maintainer collaborating on the project.

Last updated on 03 Nov 2022

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array.prototype.flatmap

Commits

1.3.0 / 2022-04-11

1.2.5 / 2021-10-01

1.2.4 / 2020-11-18

1.2.3 / 2019-12-12

1.2.2 / 2019-10-10

1.2.1 / 2018-02-23

1.2.0 / 2018-01-18

1.1.1 / 2017-11-29

1.1.0 / 2017-10-03

1.0.1 / 2017-10-02

1.0.0 / 2017-10-01

array.prototype.flatmap .css-6n7j50{display:inline;}

Getting started

Usage/Examples

Tests

Keywords

FAQs

What is array.prototype.flatmap?

Is array.prototype.flatmap popular?

Is array.prototype.flatmap well maintained?

array.prototype.flatmap