@bemedev/types/lib/types/strings.types.d.ts

Type definitions for Bemedev projects

import type { ENGLISH_LETTERS } from '../constants';
export type LowerLetters = (typeof ENGLISH_LETTERS)[number];
export type UpperLetters = Uppercase<LowerLetters>;
export type Letters = UpperLetters | LowerLetters;
export type Email = `${string}@${string}.${string}`;
export type _JoinStringHelper = string | number | boolean | bigint;
export type JoinString<T extends readonly string[], sep extends string = ' '> = T extends [] ? '' : T extends [_JoinStringHelper] ? `${T[0]}` : T extends [_JoinStringHelper, ...infer U extends readonly string[]] ? `${T[0]}${sep}${JoinString<U, sep>}` : string;
export type AddString<T, Before extends string = '', After extends string = ''> = `${Before}${T & string}${After}`;
export type StringEndWith<S extends string, E extends string> = S extends `${infer Prev}${E}` ? {
    response: true;
    full: S;
    prev: Prev;
} : {
    response: false;
    full: S;
    prev: S;
};
export type StringStartWith<S extends string, E extends string> = S extends `${E}${infer Next}` ? {
    response: true;
    full: S;
    next: Next;
} : {
    response: false;
    full: S;
    next: S;
};
export type StringContains<S extends string, E extends string> = S extends `${infer Prev}${E}${infer Next}` ? {
    response: true;
    full: S;
    prev: Prev;
    next: Next;
} : {
    response: false;
    full: S;
    prev: string;
    next: string;
};
/**
 * Credit to {@link https://stackoverflow.com/a/70831818/11704485 | Matthieu Riegler}
 */
export type SplitStringBy<S extends string, By extends string = '.'> = string extends S ? string[] : S extends '' ? [] : S extends `${infer T}${By}${infer U}` ? [T, ...SplitStringBy<U, By>] : [S];
export type ExtractS<T> = Extract<T, string>;
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