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This commit changes `Resource.hasValue()` and its derived types to improve narrowing of resources whose generic type either does not include `undefined` (i.e. when a default value has been provided) or when the generic type is `unknown`. This fixes the undesirable behavior where `hasValue()` would cause the `else` branch of an `hasValue()` conditional to have a narrowed type of `never`, given that the `hasValue()`'s type guard covers the entire type range already (meaning that the type in the else-branch cannot be inhabited in the type system, yielding the `never` type). By making the `hasValue()` method only a type guard when the generic type includes `undefined` these problems are avoided. Fixes #60766 Fixes #63545 Fixes #63982 PR Close #63994 |
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| src | ||
| test | ||
| testing | ||
| BUILD.bazel | ||
| index.ts | ||
| PACKAGE.md | ||
| public_api.ts | ||