35 lines
1.4 KiB
JavaScript
35 lines
1.4 KiB
JavaScript
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"use strict";
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var d = require("d")
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, NativeSymbol = require("ext/global-this").Symbol;
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module.exports = function (SymbolPolyfill) {
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return Object.defineProperties(SymbolPolyfill, {
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// To ensure proper interoperability with other native functions (e.g. Array.from)
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// fallback to eventual native implementation of given symbol
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hasInstance: d(
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"", (NativeSymbol && NativeSymbol.hasInstance) || SymbolPolyfill("hasInstance")
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),
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isConcatSpreadable: d(
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"",
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(NativeSymbol && NativeSymbol.isConcatSpreadable) ||
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SymbolPolyfill("isConcatSpreadable")
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),
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iterator: d("", (NativeSymbol && NativeSymbol.iterator) || SymbolPolyfill("iterator")),
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match: d("", (NativeSymbol && NativeSymbol.match) || SymbolPolyfill("match")),
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replace: d("", (NativeSymbol && NativeSymbol.replace) || SymbolPolyfill("replace")),
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search: d("", (NativeSymbol && NativeSymbol.search) || SymbolPolyfill("search")),
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species: d("", (NativeSymbol && NativeSymbol.species) || SymbolPolyfill("species")),
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split: d("", (NativeSymbol && NativeSymbol.split) || SymbolPolyfill("split")),
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toPrimitive: d(
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"", (NativeSymbol && NativeSymbol.toPrimitive) || SymbolPolyfill("toPrimitive")
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),
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toStringTag: d(
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"", (NativeSymbol && NativeSymbol.toStringTag) || SymbolPolyfill("toStringTag")
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),
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unscopables: d(
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"", (NativeSymbol && NativeSymbol.unscopables) || SymbolPolyfill("unscopables")
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)
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});
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};
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