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An ESnext spec-compliant `Array.prototype.group` shim/polyfill/replacement that works as far down as ES3.
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es-shims/Array.prototype.group
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The proposal this was based on changed, and is now in the language asObject.groupBy/Map.groupBy.
The replacement packages are:
Please use those instead.
An ESnext spec-compliantArray.prototype.group shim/polyfill/replacement that works as far down as ES3.
This package implements thees-shim API interface. It works in an ES3-supported environment and complies with the proposedspec.
BecauseArray.prototype.group depends on a receiver (thethis value), the main export takes the array to operate on as the first argument.
npm install --save array.prototype.group
vargroup=require('array.prototype.group');varassert=require('assert');vararr=[0,1,2,3,4,5];varparity=function(x){returnx%2===0 ?'even' :'odd';};varresults=group(arr,function(x,i,a){assert.equal(x,arr[i]);assert.equal(a,arr);returnparity(x);});assert.deepEqual(results,{__proto__:null,even:[0,2,4],odd:[1,3,5],});
vargroup=require('array.prototype.group');varassert=require('assert');/* when Array#group is not present */deleteArray.prototype.group;varshimmed=group.shim();assert.equal(shimmed,group.getPolyfill());assert.deepEqual(arr.group(parity),group(arr,parity));
vargroup=require('array.prototype.group');varassert=require('assert');/* when Array#group is present */varshimmed=group.shim();assert.equal(shimmed,Array.prototype.group);assert.deepEqual(arr.group(parity),group(arr,parity));
Simply clone the repo,npm install, and runnpm test
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An ESnext spec-compliant `Array.prototype.group` shim/polyfill/replacement that works as far down as ES3.
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