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https://github.com/sbrow/strings.git
synced 2026-02-28 04:21:44 -05:00
fix: Updated some things.
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@@ -1,7 +1,7 @@
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import { describe, expect, it } from 'vitest';
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import fc from 'fast-check';
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import {
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afterFirstWord, beforeFirstWord, endsWith, ltrim, startsWith,
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/*afterFirstWord, beforeFirstWord, endsWith,*/ ltrim, startsWith,
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} from './index';
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describe('strings', () => {
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32
src/index.ts
32
src/index.ts
@@ -1,39 +1,25 @@
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// import { compose, curry, isEmpty, uncurryN, until, when, } from 'ramda'
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import { curry, isEmpty, tail, when } from "./utils";
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// function escapeRegExp(string) {
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// return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
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// }
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export const startsWith = curry((needle, haystack) => haystack.indexOf(needle) === 0);
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export const startsWith = curry((needle: string, haystack: string) => haystack.indexOf(needle) === 0);
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// export const endsWith = curry((needle, haystack) => (new RegExp(`${escapeRegExp(needle)}$`)).test(haystack));
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// export const ltrim = (cutset: string, str = undefined) => {
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// if (str === undefined) {
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// return str => ltrim(cutset, str);
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// }
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// if (isEmpty(cutset) || isEmpty(str)) {
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// return str
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// }
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// // const _trim = x => ltrim(cutset)(tail(x));
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// const _trim = compose(ltrim(cutset), tail)
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// return when((x = '') => cutset.includes(x.charAt(0)), _trim)(str);
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// }
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/** String -> String -> String */
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/**
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* Trims characters from the left side of a string.
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*/
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export const ltrim = curry((cutset: string, str: string) => {
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const _trim = x => ltrim(cutset)(tail(x));
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const _trim = (x: string) => ltrim(cutset)(tail(x));
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// const _trim = compose(ltrim(cutset), tail);
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const trimmed: () => string = () => when((x: string = '') => cutset.includes(x.charAt(0)), _trim)(str);
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return isEmpty(cutset) || isEmpty(str)
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? str
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: when((x = '') => cutset.includes(x.charAt(0)), _trim, str);
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: trimmed()
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});
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// export const afterFirst = curry(
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12
src/utils.ts
12
src/utils.ts
@@ -1,20 +1,20 @@
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type Predicate<T> = (arg: T) => boolean;
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type Fn<T, U = any> = (arg: T) => U;
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import type { curry as _curry, when as _when } from 'ramda';
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export function curry (fn) {
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export const curry = function(fn) {
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return (...args) => {
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if (args.length >= fn.length) {
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return fn(...args);
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}
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// @ts-ignore
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return (...more) => curry(fn)(...args, ...more);
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}
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}
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} as typeof _curry;
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export const isEmpty = (str: string) => str == null || str === '';
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export const tail = (str: string) => str.substring(1);
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export function when<T>(predicate: Predicate<T>, whenTrueFn: Fn<T>, arg: T): any {
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export const when = curry((predicate, whenTrueFn, arg) => {
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return predicate(arg) ? whenTrueFn(arg) : arg;
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}
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}) as typeof _when;
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