字符串. prototype. matchall 游戏

(原始内容存档于2017-09-21). ES2020 spec-onference shim for String.protottype. match All. 启动它的"嘘"法来吸 String.prototype.matchAll (c) 如果无法提供或不符合规定.

此软件包执行 希姆・API 接口。 它在ES3支持的环境中工作,并遵守 光谱。 。 。 .

最常见的用途:

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

测试

仅仅复制回转, npm install运行 npm test