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chore(types): separate MatcherContext, MatcherUtils and MatcherState #13141

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merged 6 commits into from Aug 17, 2022

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SimenB
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@SimenB SimenB commented Aug 16, 2022

Summary

Inspired by DefinitelyTyped/DefinitelyTyped#61717 which differentiates.

Test plan

Green CI


export type MatcherFunction<Expected extends Array<unknown> = []> =
MatcherFunctionWithState<MatcherState, Expected>;
MatcherFunctionWithContext<MatcherContext, Expected>;

// TODO should be replaced with `MatcherFunctionWithContext`
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@mrazauskas what is this TODO for?

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If I recall it right, MatcherFunction and MatcherFunctionWithContext does not allow any type of actual and expected values. Or so. Currently there is a need to have anys internally, but would be nicer to rework these into unknowns. After this will be done, RawMatcherFn can be replaced with MatcherFunctionWithContext.

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In other words, RawMatcherFn is redundant type, but it cannot be removed at this moment.

@@ -41,12 +45,19 @@ export type MatchersObject = {
export type ThrowingMatcherFn = (actual: any) => void;
export type PromiseMatcherFn = (actual: any) => Promise<void>;

export interface MatcherUtils {
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I just extracted the fields that felt more "util-y" - should I take others?

};

const matcherContext: MatcherContext = {
...getState<MatcherState>(),
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explicit generic as otherwise it inferred MatcherContext and didn't error when MatcherContext where missing

@SimenB SimenB changed the title chore: separate MatcherContext, MatcherUtils and MatcherState chore(types): separate MatcherContext, MatcherUtils and MatcherState Aug 17, 2022
@SimenB SimenB merged commit a5b52a5 into jestjs:main Aug 17, 2022
@SimenB SimenB deleted the split-up-matcher-context-matcher-utils branch August 17, 2022 06:47
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3 participants