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| author | Kai Stevenson <kai@kaistevenson.com> | 2025-11-03 23:41:31 -0800 |
|---|---|---|
| committer | Kai Stevenson <kai@kaistevenson.com> | 2025-11-03 23:41:31 -0800 |
| commit | 8b610f2bcfc223333254ce9679730c42dce6d26e (patch) | |
| tree | ac1eab726395523f8725bda3d040e22214cba409 /src/lang/ts-lang/util/number.ts | |
| parent | 56040f3ff85e77311f0c864a89afd63fcf1bdb50 (diff) | |
add createFn
Diffstat (limited to 'src/lang/ts-lang/util/number.ts')
| -rw-r--r-- | src/lang/ts-lang/util/number.ts | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/lang/ts-lang/util/number.ts b/src/lang/ts-lang/util/number.ts new file mode 100644 index 0000000..6e4e360 --- /dev/null +++ b/src/lang/ts-lang/util/number.ts @@ -0,0 +1,37 @@ +export type NumberToArray< + Number extends number, + Carry extends readonly any[] = [] +> = Number extends Carry["length"] + ? Carry + : NumberToArray<Number, [...Carry, any]>; + +export type NumbersToArray< + Numbers extends readonly number[], + Carry extends readonly any[] = [] +> = Numbers extends [ + infer Head extends number, + ...infer Tail extends readonly number[] +] + ? NumbersToArray<Tail, [...Carry, ...NumberToArray<Head>]> + : Carry; + +export type AddNumbers<Numbers extends readonly number[]> = + NumbersToArray<Numbers> extends infer T extends readonly any[] + ? T["length"] + : never; + +export type MultiplyInner< + N extends number, + MS extends readonly any[], + Carry extends number = 0 +> = MS extends [infer Head extends number, ...infer Tail extends readonly any[]] + ? MultiplyInner<N, Tail, AddNumbers<[Carry, N]>> + : Carry; + +export type Multiply<M extends number, N extends number> = MultiplyInner< + M, + NumberToArray<N> +>; + +export type ExtractNumber<T extends any> = + T extends `${infer Inner extends number}` ? Inner : never; |