| 1 | /**
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| 2 | * Constructs an enumeration with keys equal to their value.
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| 3 | *
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| 4 | * For example:
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| 5 | *
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| 6 | * var COLORS = keyMirror({blue: null, red: null});
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| 7 | * var myColor = COLORS.blue;
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| 8 | * var isColorValid = !!COLORS[myColor];
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| 9 | *
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| 10 | * The last line could not be performed if the values of the generated enum were
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| 11 | * not equal to their keys.
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| 12 | *
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| 13 | * Input: {key1: val1, key2: val2}
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| 14 | * Output: {key1: key1, key2: key2}
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| 15 | */
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| 16 | declare function keyMirror<T extends {}>(obj: T): { [K in keyof T]: K };
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| 17 |
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| 18 | declare namespace keyMirror {}
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| 19 |
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| 20 | export = keyMirror;
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