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[dotfiles/.git] / .config / coc / extensions / node_modules / coc-prettier / node_modules / type-fest / ts41 / camel-case.d.ts

diff --git a/.config/coc/extensions/node_modules/coc-prettier/node_modules/type-fest/ts41/camel-case.d.ts b/.config/coc/extensions/node_modules/coc-prettier/node_modules/type-fest/ts41/camel-case.d.ts
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+import {WordSeparators} from '../source/utilities';
+
+/**
+Recursively split a string literal into two parts on the first occurence of the given string, returning an array literal of all the separate parts.
+*/
+export type Split<S extends string, D extends string> =
+       string extends S ? string[] :
+       S extends '' ? [] :
+       S extends `${infer T}${D}${infer U}` ? [T, ...Split<U, D>] :
+       [S];
+
+/**
+Step by step takes the first item in an array literal, formats it and adds it to a string literal, and then recursively appends the remainder.
+
+Only to be used by `CamelCaseStringArray<>`.
+
+@see CamelCaseStringArray
+*/
+type InnerCamelCaseStringArray<Parts extends any[], PreviousPart> =
+       Parts extends [`${infer FirstPart}`, ...infer RemainingParts]
+               ? FirstPart extends undefined
+                       ? ''
+                       : FirstPart extends ''
+                                       ? InnerCamelCaseStringArray<RemainingParts, PreviousPart>
+                                       : `${PreviousPart extends '' ? FirstPart : Capitalize<FirstPart>}${InnerCamelCaseStringArray<RemainingParts, FirstPart>}`
+               : '';
+
+/**
+Starts fusing the output of `Split<>`, an array literal of strings, into a camel-cased string literal.
+
+It's separate from `InnerCamelCaseStringArray<>` to keep a clean API outwards to the rest of the code.
+
+@see Split
+*/
+type CamelCaseStringArray<Parts extends string[]> =
+       Parts extends [`${infer FirstPart}`, ...infer RemainingParts]
+               ? Uncapitalize<`${FirstPart}${InnerCamelCaseStringArray<RemainingParts, FirstPart>}`>
+               : never;
+
+/**
+Convert a string literal to camel-case.
+
+This can be useful when, for example, converting some kebab-cased command-line flags or a snake-cased database result.
+
+@example
+```
+import {CamelCase} from 'type-fest';
+
+// Simple
+
+const someVariable: CamelCase<'foo-bar'> = 'fooBar';
+
+// Advanced
+
+type CamelCasedProps<T> = {
+       [K in keyof T as CamelCase<K>]: T[K]
+};
+
+interface RawOptions {
+       'dry-run': boolean;
+       'full_family_name': string;
+       foo: number;
+}
+
+const dbResult: CamelCasedProps<ModelProps> = {
+       dryRun: true,
+       fullFamilyName: 'bar.js',
+       foo: 123
+};
+```
+*/
+export type CamelCase<K> = K extends string ? CamelCaseStringArray<Split<K, WordSeparators>> : K;