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31 lines
1.0 KiB
31 lines
1.0 KiB
'use strict';
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var uncurryThis = require('../internals/function-uncurry-this');
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var isArray = require('../internals/is-array');
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var isCallable = require('../internals/is-callable');
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var classof = require('../internals/classof-raw');
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var toString = require('../internals/to-string');
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var push = uncurryThis([].push);
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module.exports = function (replacer) {
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if (isCallable(replacer)) return replacer;
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if (!isArray(replacer)) return;
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var rawLength = replacer.length;
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var keys = [];
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for (var i = 0; i < rawLength; i++) {
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var element = replacer[i];
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if (typeof element == 'string') push(keys, element);
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else if (typeof element == 'number' || classof(element) === 'Number' || classof(element) === 'String') push(keys, toString(element));
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}
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var keysLength = keys.length;
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var root = true;
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return function (key, value) {
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if (root) {
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root = false;
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return value;
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}
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if (isArray(this)) return value;
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for (var j = 0; j < keysLength; j++) if (keys[j] === key) return value;
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};
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};
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