Use typing to force parsing all query parameters #72
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as we were overwriting with the default value. This used to make sense as we were reusing the `DEFAULT_SPACING` constant elsewhere, but we no longer do.
JosephMarinier
commented
May 17, 2022
| }); | ||
| const convertSearchParams = <T>( | ||
| q: URLSearchParams, | ||
| conversions: Required<{ [Key in keyof T]: (key: string | null) => T[Key] }> |
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That's the important bit: The Required ensures that a conversion function is defined for all query parameters (all keyof T) defined in the different Query...State types, even if they have a ?:. This ensures that q.get() gets called with only parameter names from a Query...State type. This replaces the 12 calls to q.get() with 12 string constants, which seemed error-prone.
JosephMarinier
commented
May 17, 2022
| sort: (q.get(SORT) || undefined) as UtterancesSortableColumn | undefined, | ||
| descending: q.get(DESCENDING) !== null || undefined, | ||
| }); | ||
| const convertStringArray = <T extends string>(s: string | null) => |
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The T is to seamlessly support string literals.
christyler3030
approved these changes
May 18, 2022
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Description:
DEFAULT_SPACINGconstant elsewhere, but we no longer do.Checklist:
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it.
ran
pre-commit run --all-filesat the end.Run
cd webapp && yarn typeswhile the back-end is running.our users.
READMEfiles and our wiki for any big design decisions, if relevant.