maxhilliard
/ deepObjectKeys.ts
Created
May 26, 2023 09:01
TypeScript utility type to pick deep keys of an object
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| type DeepObjectKeys<T> = T extends Record<string, unknown> | |
| ? { | |
| [K in keyof T]-?: K extends string ? `${K}` | `${K}.${DeepObjectKeys<T[K]>}` : never | |
| }[keyof T] | |
| : never | |
| const testObj = { | |
| foo: { | |
| bar: false, | |
| baz: { |
maxhilliard
/ split-and-join-utility-types.ts
Created
November 5, 2021 11:41
Utility types to improve JS's native `.split` and `.join`
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| // So let's say we have a string of known parts, Str | |
| type Foo = 'foo' | |
| type Bar = 'bar' | |
| type Baz = 'baz' | |
| type Str = `${Foo}.${Bar}.${Baz}` | |
| const str: Str = 'foo.bar.baz' | |
| // I want to split it into the known parts, | |
| // Which I can do in a nice way with this Split type |
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| { | |
| "Ansi 5 Color" : { | |
| "Red Component" : 0.82745098039215681, | |
| "Color Space" : "sRGB", | |
| "Blue Component" : 0.50980392156862742, | |
| "Green Component" : 0.21176470588235294 | |
| }, | |
| "Tags" : [ | |
| ], |