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Tim van der Lippe
16aca394c5
Major update breaking changes: - ESLint 7.0.0 (https://eslint.org/docs/user-guide/migrating-to-7.0.0) now includes .eslint.rc.js in its list, which is fine for us. Other changes are not applicable for us. - eslint-plugin-mocha (https://github.com/lo1tuma/eslint-plugin-mocha/blob/master/CHANGELOG.md#700-may-13-2020) drops support for ESLint <7, but this CL updates to 7+. Other changes are not applicable for us. DISABLE_THIRD_PARTY_CHECK=Updating ESLint R=petermarshall@chromium.org Change-Id: I7760e084ef87f73a92f9ea4e075fb4c065047f5a Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2534873 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
array.prototype.flat 
An ES2019 spec-compliant Array.prototype.flat 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 proposed spec.
Because Array.prototype.flat 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.flat
Usage/Examples
var flat = require('array.prototype.flat');
var assert = require('assert');
var arr = [1, [2], [], 3, [[4]]];
assert.deepEqual(flat(arr, 1), [1, 2, 3, [4]]);
var flat = require('array.prototype.flat');
var assert = require('assert');
/* when Array#flat is not present */
delete Array.prototype.flat;
var shimmedFlat = flat.shim();
assert.equal(shimmedFlat, flat.getPolyfill());
assert.deepEqual(arr.flat(), flat(arr));
var flat = require('array.prototype.flat');
var assert = require('assert');
/* when Array#flat is present */
var shimmedIncludes = flat.shim();
var mapper = function (x) { return [x, 1]; };
assert.equal(shimmedIncludes, Array.prototype.flat);
assert.deepEqual(arr.flat(mapper), flat(arr, mapper));
Tests
Simply clone the repo, npm install, and run npm test