ES2020 spec-compliant shim for String.prototype.matchAll. Invoke its "shim" method to shim String.prototype.matchAll if it is unavailable or noncompliant.
This package implements the es-shim API interface. It works in an ES3-supported environment, and complies with the spec.
Most common usage: ```js const assert = require('assert'); const matchAll = require('string.prototype.matchall');
const str = 'aabc'; const nonRegexStr = 'ab'; const globalRegex = /[ac]/g; const nonGlobalRegex = /[bc]/i;
// non-regex arguments are coerced into a global regex assert.deepEqual( [...matchAll(str, nonRegexStr)], [...matchAll(str, new RegExp(nonRegexStr, 'g'))] );
assert.deepEqual([...matchAll(str, globalRegex)], [ Object.assign(['a'], { index: 0, input: str, groups: undefined }), Object.assign(['a'], { index: 1, input: str, groups: undefined }), Object.assign(['c'], { index: 3, input: str, groups: undefined }), ]);
assert.throws(() => matchAll(str, nonGlobalRegex)); // non-global regexes throw
matchAll.shim(); // will be a no-op if not needed
// non-regex arguments are coerced into a global regex assert.deepEqual( [...str.matchAll(nonRegexStr)], [...str.matchAll(new RegExp(nonRegexStr, 'g'))] );
assert.deepEqual([...str.matchAll(globalRegex)], [ Object.assign(['a'], { index: 0, input: str, groups: undefined }), Object.assign(['a'], { index: 1, input: str, groups: undefined }), Object.assign(['c'], { index: 3, input: str, groups: undefined }), ]);
assert.throws(() => matchAll(str, nonGlobalRegex)); // non-global regexes throw
```
Simply clone the repo, npm install, and run npm test