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on this file since bdd6491 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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1 | declare const mimicFn: {
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2 | /**
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3 | Make a function mimic another one. It will copy over the properties `name`, `length`, `displayName`, and any custom properties you may have set.
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4 |
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5 | @param to - Mimicking function.
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6 | @param from - Function to mimic.
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7 | @returns The modified `to` function.
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8 |
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9 | @example
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10 | ```
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11 | import mimicFn = require('mimic-fn');
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12 |
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13 | function foo() {}
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14 | foo.unicorn = '🦄';
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15 |
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16 | function wrapper() {
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17 | return foo();
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18 | }
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19 |
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20 | console.log(wrapper.name);
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21 | //=> 'wrapper'
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22 |
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23 | mimicFn(wrapper, foo);
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24 |
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25 | console.log(wrapper.name);
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26 | //=> 'foo'
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27 |
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28 | console.log(wrapper.unicorn);
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29 | //=> '🦄'
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30 | ```
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31 | */
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32 | <
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33 | ArgumentsType extends unknown[],
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34 | ReturnType,
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35 | FunctionType extends (...arguments: ArgumentsType) => ReturnType
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36 | >(
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37 | to: (...arguments: ArgumentsType) => ReturnType,
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38 | from: FunctionType
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39 | ): FunctionType;
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40 |
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41 | // TODO: Remove this for the next major release, refactor the whole definition to:
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42 | // declare function mimicFn<
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43 | // ArgumentsType extends unknown[],
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44 | // ReturnType,
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45 | // FunctionType extends (...arguments: ArgumentsType) => ReturnType
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46 | // >(
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47 | // to: (...arguments: ArgumentsType) => ReturnType,
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48 | // from: FunctionType
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49 | // ): FunctionType;
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50 | // export = mimicFn;
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51 | default: typeof mimicFn;
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52 | };
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53 |
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54 | export = mimicFn;
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