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'use strict'
// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Symbol#Well-known_symbols
const WELL_KNOWN = new Map([
[Symbol.iterator, 'Symbol.iterator'],
[Symbol.match, 'Symbol.match'],
[Symbol.replace, 'Symbol.replace'],
[Symbol.search, 'Symbol.search'],
[Symbol.split, 'Symbol.split'],
[Symbol.hasInstance, 'Symbol.hasInstance'],
[Symbol.isConcatSpreadable, 'Symbol.isConcatSpreadable'],
[Symbol.unscopables, 'Symbol.unscopables'],
[Symbol.species, 'Symbol.species'],
[Symbol.toPrimitive, 'Symbol.toPrimitive'],
[Symbol.toStringTag, 'Symbol.toStringTag']
].filter(entry => entry[0]))
exports.isWellKnown = symbol => WELL_KNOWN.has(symbol)
exports.getLabel = symbol => WELL_KNOWN.get(symbol)
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