@diotoborg/earum-eligendi NPM | npm.io

4.10.110 • Published 10 months ago

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MIT

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10 months ago

@diotoborg/earum-eligendi

An ES5 spec-compliant Array.prototype.map 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.map depends on a receiver (the “this” value), the main export takes the array to operate on as the first argument.

Example

var map = require('@diotoborg/earum-eligendi');
var assert = require('assert');

assert.deepEqual(map([1, 1, 1], function (x) { return x + 1; }), [2, 2, 2]);
assert.deepEqual(map([1, 0, 1], function (x) { return x + 1; }), [2, 1, 2]);

var map = require('@diotoborg/earum-eligendi');
var assert = require('assert');
/* when Array#map is not present */
delete Array.prototype.map;
var shimmedMap = map.shim();
assert.equal(shimmedMap, map.getPolyfill());
var arr = [1, 2, 3];
var add4 = function (x) { return x + 4; };
assert.deepEqual(arr.map(add4), map(arr, add4));

var map = require('@diotoborg/earum-eligendi');
var assert = require('assert');
/* when Array#map is present */
var shimmedMap = map.shim();
assert.equal(shimmedMap, Array.prototype.map);
assert.deepEqual(arr.map(add4), map(arr, add4));

Tests

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

ECMAScript 2018 deterministic efficient Uint16Array coverage serialization weakset ES8 RegExp.prototype.flags react delete name toobject tester libphonenumber fast-copy async tostringtag figlet look ReactiveExtensions 256 json hash config match define autoprefixer iam parser flatMap es5 offset bundler string trimRight deep-copy io-ts request kinesis data private data loadbalancing computed-types find-up object .gitignore invariant Microsoft swf curried vpc StyleSheet TypeBox reuse ponyfill immutable rmdir redux type byteLength structuredClone source map ajv toArray sham side aws getintrinsic up cjk ES6 multi-package typedarrays WeakSet typedarray local globalThis id validate listeners child syntax cloudtrail rfc4122 ES2017 preprocessor Object.values make dir dataView byte typeof full unicode ast 6to5 jQuery japanese eslintplugin collection.es6 toolkit binaries cache harmony compiler regular-expression byteOffset shrinkwrap some function styled-components shared ignore transport internal Object.entries npm sorted fastclone negative zero events error flag real-time getPrototypeOf const execute browserlist env fast-deep-copy 3d fps ECMAScript 2016 fast-deep-clone prune log resolve iterate ECMAScript 6 isConcatSpreadable spinners modules format CSS Promise from rm -rf beanstalk logger Streams environment forEach es7 codes dataview ECMAScript 5 debug waapi redirect json-schema functions parents drop es2015 i18n progress globals queue character whatwg tc39 private negative react pose get idle buffers link circular command-line helper clone iterator schema ec2 call stringifier Array.prototype.findLast worker package.json setImmediate indicator amazon animation fastify configurable jest shebang xterm endpoint arktype equality String.prototype.matchAll atom mapreduce higher-order take 0 args input performant deep BigInt64Array safe arrays consume array Symbol fast-clone Function.prototype.name ESnext identifiers chrome censor names language keys _.extend rework web emit monorepo debugger Object.getPrototypeOf wget react-hooks

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