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21 lines
635 B
21 lines
635 B
// TODO: Extend this to symbol when TS allows symbols in index signatures:
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// https://github.com/Microsoft/TypeScript/issues/1863
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/**
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Invert the key/value of an object. Example: `{foo: 'bar'}` → `{bar: 'foo'}`.
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@example
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```
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import invertKeyValue = require('invert-kv');
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invertKeyValue({foo: 'bar', '🦄': '🌈'});
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//=> {bar: 'foo', '🌈': '🦄'}
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```
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*/
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declare function invertKeyValue<
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KeyType extends string | number,
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ValueType extends string | number | symbol
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>(
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object: {[key in KeyType]: ValueType}
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): {[key in ValueType]: KeyType extends number ? Exclude<KeyType, number> | string : KeyType};
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export = invertKeyValue;
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