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janhesters/mock-fn.js

Created September 26, 2020 12:45
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The mock function.
Raw
mock-fn.js
function fn(implementation = () => {}) {
const mockFn = (...args) => {
mockFn.calls.push(args);
return implementation(...args);
};
mockFn.calls = [];
return mockFn;
}
export default fn;
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