diff options
Diffstat (limited to 'src/types/misc.d.ts')
| -rw-r--r-- | src/types/misc.d.ts | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/types/misc.d.ts b/src/types/misc.d.ts index 6560f2b..83b11b5 100644 --- a/src/types/misc.d.ts +++ b/src/types/misc.d.ts @@ -44,3 +44,13 @@ type NominalType<K, T> = K & { __nominal_type__: T }; * Number of seconds since the Unix epoch (1970-01-01 UTC). */ type UnixTimestamp = NominalType<number, 'UnixTimestamp'>; + + +/** + * Oldschool NodeJS callback + * + * We should migrate to promises over time. The purpose of this type is to + * reduce the boilerplate of these function definitions, and to clearly + * document that this pattern is something that used to be done frequently. + */ +type NodeCallback<T, R = void> = ( e: Error | null, result: T | null ) => R; |