jsshort/src/string.ts

It will make your codes much short and easiar

export function len(this: string): number {
  return this.length;
}

export function str(this: string): string {
  return this.toString();
}

export function add(this: string, ...strings: string[]): string {
  return this.concat(...strings);
}

export function sb(this: string, start: number, end: number): string {
  return this.substring(start, end);
}

export function ind(this: string, substring: string): number {
  return this.indexOf(substring);
}

export function lstInd(this: string, substring: string): number {
  return this.lastIndexOf(substring);
}

export function inString(this: string, substring: string): boolean {
  return this.includes(substring);
}

export function start(this: string, substring: string): boolean {
  return this.startsWith(substring);
}

export function end(this: string, substring: string): boolean {
  return this.endsWith(substring);
}

export function upr(this: string): string {
  return this.toUpperCase();
}

export function lwr(this: string): string {
  return this.toLowerCase();
}

export function trS(this: string): string {
  return this.trimStart();
}

export function trE(this: string): string {
  return this.trimEnd();
}

export function rpc(this: string, stringOrRegex: string, newSubstring: string): string {
  return this.replace(stringOrRegex, newSubstring);
}

export function rpcA(this: string, stringOrRegex: string | RegExp, newSubstring: string): string {
  return this.replace(stringOrRegex, newSubstring);
}

export function at(this: string, index: number): string {
  return this.charAt(index);
}

export function chCdAt(this: string, index: number): number {
  return this.charCodeAt(index);
}

export function locCmp(this: string, compareString: string): number {
  return this.localeCompare(compareString);
}


// Add these methods to the String.prototype
declare global {
  interface String {
      len(): number;
      str(): string;
      add(...strings: string[]): string;
      sb(start: number, end: number): string;
      ind(substring: string): number;
      lstInd(substring: string): number;
      inString(substring: string): boolean;
      start(substring: string): boolean;
      end(substring: string): boolean;
      upr(): string;
      lwr(): string;
      trS(): string;
      trE(): string;
      rpc(oldSubstring: string, newSubstring: string): string;
      rpcA(oldSubstring: string, newSubstring: string): string;
      at(index: number): string;
      chCdAt(index: number): number;
      locCmp(compareString: string): number;
  }
}

// Add the methods to String.prototype
String.prototype.len = len;
String.prototype.str = str;
String.prototype.add = add;
String.prototype.sb = sb;
String.prototype.ind = ind;
String.prototype.lstInd = lstInd;
String.prototype.inString = inString;
String.prototype.start = start;
String.prototype.end = end;
String.prototype.upr = upr;
String.prototype.lwr = lwr;
String.prototype.trS = trS;
String.prototype.trE = trE;
String.prototype.rpc = rpc;
String.prototype.rpcA = rpcA;
String.prototype.at = at;
String.prototype.chCdAt = chCdAt;
String.prototype.locCmp = locCmp;