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Diffstat (limited to 'packages/taler-util/src/codec.ts')
-rw-r--r-- | packages/taler-util/src/codec.ts | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/packages/taler-util/src/codec.ts b/packages/taler-util/src/codec.ts index 89db2de06..54d450d82 100644 --- a/packages/taler-util/src/codec.ts +++ b/packages/taler-util/src/codec.ts @@ -491,6 +491,19 @@ export function codecOptional<V>(innerCodec: Codec<V>): Codec<V | undefined> { }; } +export function codecForLazy<V>(innerCodec: () => Codec<V>): Codec<V> { + let instance: Codec<V> | undefined = undefined + return { + decode(x: any, c?: Context): V { + if (instance === undefined) { + instance = innerCodec() + } + return instance.decode(x, c); + }, + }; +} + + export type CodecType<T> = T extends Codec<infer X> ? X : any; export function codecForEither<T extends Array<Codec<unknown>>>( |