refactor: remove lang.ts (#14837)

modules/@angular/common/src/pipes/date_pipe.ts

@@ -7,9 +7,9 @@
  */
 
 import {Inject, LOCALE_ID, Pipe, PipeTransform} from '@angular/core';
-import {NumberWrapper} from '../facade/lang';
 import {DateFormatter} from './intl';
 import {invalidPipeArgumentError} from './invalid_pipe_argument_error';
+import {isNumeric} from './number_pipe';
 
 const ISO8601_DATE_REGEX =
     /^(\d{4})-?(\d\d)-?(\d\d)(?:T(\d\d)(?::?(\d\d)(?::?(\d\d)(?:\.(\d+))?)?)?(Z|([+-])(\d\d):?(\d\d))?)?$/;
@@ -111,7 +111,7 @@ export class DatePipe implements PipeTransform {
 
     if (isDate(value)) {
       date = value;
-    } else if (NumberWrapper.isNumeric(value)) {
+    } else if (isNumeric(value)) {
       date = new Date(parseFloat(value));
     } else if (typeof value === 'string' && /^(\d{4}-\d{1,2}-\d{1,2})$/.test(value)) {
       /**

modules/@angular/common/src/pipes/invalid_pipe_argument_error.ts

@@ -6,9 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Type} from '@angular/core';
-
-import {stringify} from '../facade/lang';
+import {Type, ɵstringify as stringify} from '@angular/core';
 
 export function invalidPipeArgumentError(type: Type<any>, value: Object) {
   return Error(`InvalidPipeArgument: '${value}' for pipe '${stringify(type)}'`);

modules/@angular/common/src/pipes/number_pipe.ts

@@ -7,9 +7,6 @@
  */
 
 import {Inject, LOCALE_ID, Pipe, PipeTransform, Type} from '@angular/core';
-
-import {NumberWrapper} from '../facade/lang';
-
 import {NumberFormatStyle, NumberFormatter} from './intl';
 import {invalidPipeArgumentError} from './invalid_pipe_argument_error';
 
@@ -21,7 +18,7 @@ function formatNumber(
   if (value == null) return null;
 
   // Convert strings to numbers
-  value = typeof value === 'string' && NumberWrapper.isNumeric(value) ? +value : value;
+  value = typeof value === 'string' && isNumeric(value) ? +value : value;
   if (typeof value !== 'number') {
     throw invalidPipeArgumentError(pipe, value);
   }
@@ -42,13 +39,13 @@ function formatNumber(
       throw new Error(`${digits} is not a valid digit info for number pipes`);
     }
     if (parts[1] != null) {  // min integer digits
-      minInt = NumberWrapper.parseIntAutoRadix(parts[1]);
+      minInt = parseIntAutoRadix(parts[1]);
     }
     if (parts[3] != null) {  // min fraction digits
-      minFraction = NumberWrapper.parseIntAutoRadix(parts[3]);
+      minFraction = parseIntAutoRadix(parts[3]);
     }
     if (parts[5] != null) {  // max fraction digits
-      maxFraction = NumberWrapper.parseIntAutoRadix(parts[5]);
+      maxFraction = parseIntAutoRadix(parts[5]);
     }
   }
 
@@ -162,3 +159,15 @@ export class CurrencyPipe implements PipeTransform {
         symbolDisplay);
   }
 }
+
+function parseIntAutoRadix(text: string): number {
+  const result: number = parseInt(text);
+  if (isNaN(result)) {
+    throw new Error('Invalid integer literal when parsing ' + text);
+  }
+  return result;
+}
+
+export function isNumeric(value: any): boolean {
+  return !isNaN(value - parseFloat(value));
+}