refactor(facade): inline StringWrapper (#12051)

modules/@angular/facade/src/lang.ts

@@ -137,73 +137,6 @@ export function stringify(token: any): string {
   return newLineIndex === -1 ? res : res.substring(0, newLineIndex);
 }
 
-export class StringWrapper {
-  static fromCharCode(code: number): string { return String.fromCharCode(code); }
-
-  static charCodeAt(s: string, index: number): number { return s.charCodeAt(index); }
-
-  static split(s: string, regExp: RegExp): string[] { return s.split(regExp); }
-
-  static equals(s: string, s2: string): boolean { return s === s2; }
-
-  static stripLeft(s: string, charVal: string): string {
-    if (s && s.length) {
-      var pos = 0;
-      for (var i = 0; i < s.length; i++) {
-        if (s[i] != charVal) break;
-        pos++;
-      }
-      s = s.substring(pos);
-    }
-    return s;
-  }
-
-  static stripRight(s: string, charVal: string): string {
-    if (s && s.length) {
-      var pos = s.length;
-      for (var i = s.length - 1; i >= 0; i--) {
-        if (s[i] != charVal) break;
-        pos--;
-      }
-      s = s.substring(0, pos);
-    }
-    return s;
-  }
-
-  static replace(s: string, from: string, replace: string): string {
-    return s.replace(from, replace);
-  }
-
-  static replaceAll(s: string, from: RegExp, replace: string): string {
-    return s.replace(from, replace);
-  }
-
-  static slice<T>(s: string, from: number = 0, to: number = null): string {
-    return s.slice(from, to === null ? undefined : to);
-  }
-
-  static replaceAllMapped(s: string, from: RegExp, cb: (m: string[]) => string): string {
-    return s.replace(from, function(...matches: any[]) {
-      // Remove offset & string from the result array
-      matches.splice(-2, 2);
-      // The callback receives match, p1, ..., pn
-      return cb(matches);
-    });
-  }
-
-  static contains(s: string, substr: string): boolean { return s.indexOf(substr) != -1; }
-
-  static compare(a: string, b: string): number {
-    if (a < b) {
-      return -1;
-    } else if (a > b) {
-      return 1;
-    } else {
-      return 0;
-    }
-  }
-}
-
 export class StringJoiner {
   constructor(public parts: string[] = []) {}