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52 lines
1.8 KiB
52 lines
1.8 KiB
2 years ago
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# Disallow use of deprecated functions (`no-deprecated-functions`)
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Over the years Jest has accrued some debt in the form of functions that have
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either been renamed for clarity, or replaced with more powerful APIs.
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While typically these deprecated functions are kept in the codebase for a number
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of majors, eventually they are removed completely.
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This rule requires knowing which version of Jest you're using - see
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[this section of the readme](../../README.md#jest-version-setting) for details
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on how that is obtained automatically and how you can explicitly provide a
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version if needed.
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## Rule details
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This rule warns about calls to deprecated functions, and provides details on
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what to replace them with, based on the version of Jest that is installed.
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This rule can also autofix a number of these deprecations for you.
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### `jest.resetModuleRegistry`
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This function was renamed to `resetModules` in Jest 15, and is scheduled for
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removal in Jest 27.
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### `jest.addMatchers`
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This function was replaced with `expect.extend` in Jest 17, and is scheduled for
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removal in Jest 27.
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### `require.requireActual` & `require.requireMock`
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These functions were replaced in Jest 21 and removed in Jest 26.
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Originally, the `requireActual` & `requireMock` the `requireActual`&
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`requireMock` functions were placed onto the `require` function.
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These functions were later moved onto the `jest` object in order to be easier
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for type checkers to handle, and their use via `require` deprecated. Finally,
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the release of Jest 26 saw them removed from the `require` function all
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together.
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### `jest.runTimersToTime`
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This function was renamed to `advanceTimersByTime` in Jest 22, and is scheduled
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for removal in Jest 27.
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### `jest.genMockFromModule`
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This function was renamed to `createMockFromModule` in Jest 26, and is scheduled
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for removal in a future version of Jest.
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