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Diffstat (limited to 'src/utils/adt.ts')
| -rw-r--r-- | src/utils/adt.ts | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/utils/adt.ts b/src/utils/adt.ts index e9a6c51..7234f67 100644 --- a/src/utils/adt.ts +++ b/src/utils/adt.ts @@ -5,6 +5,11 @@ export const match = [key in T['tag'] | '_']?: (v: TagValue<T, key>) => R }): R => ((pattern as any)[tag.tag] || (pattern._ as any))(tag.value) +export const matchString = + <R, T extends string>(key: T, pattern: { + [key in T | '_']?: (key: key) => R + }): R => ((pattern as any)[key] || (pattern._ as any))(key) + type Tag<N, V> = { tag: N; value: V } export type Enum<T> = { [N in keyof T]: Tag<N, T[N]> }[keyof T] |