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- 9 commits
- 25 files changed
- 1 contributor
Commits on Apr 7, 2024
Commits on Apr 9, 2024
Commits on Apr 13, 2024
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Improve type inference for result higher order functions
Add better type inference for Result methods by using a generic result type `TResult extends Result<unknown, unknown>` and infer keyword to get the inner value type of the result `TResult extends Result<infer U, infer _> ? U : never`. Fixes flatMap type inference when performing flatMap on Err type. Previously the Err type flatMap would be inferred from the given function return Result, which could be completely wrong as the result inner value types can be changed. Now properly takes the parent type into account if the Err inner type changes in the flatMap function. This will now be properly inferred into the returned result type `Result<U, TError | UError>`. If the Err type cannot be inferred from the parent type–unknown will be returned instead. This is better than having wrong error type returned. Make union result type tests more complicated to test more type inference cases. Also adds more type tests for Result type higher order functions.
Commits on Apr 14, 2024
Commits on Apr 16, 2024
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Fix type inference for unwrap, unwrapErr, isOk and isErr HOFs
These functions were still missing the previous fixes that were introduced in eef0502. Add type inference tests for these higher-order functions.
Commits on Apr 17, 2024
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Improve type inference for Option higher order functions
Add better type inference for Option methods by using a generic option type `TOption extends Option<any>` and infer keyword to get the inner value type of the Option `TOption extends Option<infer U> ? U : never`. If the Option type cannot be inferred from the parent type unknown will be returned instead. This is better than having wrong Option type returned. Make union Option type tests more complicated to test more type inference cases. Also adds more type tests for Option type higher order functions. The method `isSome` returns false when called from a None value and the method `isNone` return false when called from a Some value.
Commits on Apr 19, 2024
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Add
Option.zipmethod and higher-order function variantSignature: `<U>(option: Option<U>): Option<[T, U]>` Option.zip combines two option values into a tuple and returns the tuple wrapped in Option. ```ts Some(42).zip(Some(84)); // Evaluates to Some<[42, 84]> Some(42).zip(None); // Evaluates to None None.zip(Some(84)); // Evaluates to None ```
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Change all dev dependencies to come from
jsrRemove `dev_deps.ts` as obsolete.
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