57 lines
1.3 KiB
TypeScript
Executable file
57 lines
1.3 KiB
TypeScript
Executable file
declare namespace mimicFn {
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interface Options {
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/**
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Skip modifying [non-configurable properties](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyDescriptor#Description) instead of throwing an error.
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@default false
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*/
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readonly ignoreNonConfigurable?: boolean;
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}
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}
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/**
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Modifies the `to` function to mimic the `from` function. Returns the `to` function.
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`name`, `displayName`, and any other properties of `from` are copied. The `length` property is not copied. Prototype, class, and inherited properties are copied.
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`to.toString()` will return the same as `from.toString()` but prepended with a `Wrapped with to()` comment.
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@param to - Mimicking function.
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@param from - Function to mimic.
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@returns The modified `to` function.
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@example
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```
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import mimicFn = require('mimic-fn');
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function foo() {}
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foo.unicorn = '🦄';
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function wrapper() {
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return foo();
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}
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console.log(wrapper.name);
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//=> 'wrapper'
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mimicFn(wrapper, foo);
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console.log(wrapper.name);
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//=> 'foo'
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console.log(wrapper.unicorn);
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//=> '🦄'
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```
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*/
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declare function mimicFn<
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ArgumentsType extends unknown[],
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ReturnType,
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FunctionType extends (...arguments: ArgumentsType) => ReturnType
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>(
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to: (...arguments: ArgumentsType) => ReturnType,
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from: FunctionType,
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options?: mimicFn.Options,
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): FunctionType;
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export = mimicFn;
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