Adding Angular and dependent packages for testing

third_party/pkg/angular/lib/filter/number.dart

Index: third_party/pkg/angular/lib/filter/number.dart
diff --git a/third_party/pkg/angular/lib/filter/number.dart b/third_party/pkg/angular/lib/filter/number.dart
new file mode 100644
index 0000000000000000000000000000000000000000..e778d77707a3957513305c21c4ab35099d004128
--- /dev/null
+++ b/third_party/pkg/angular/lib/filter/number.dart
@@ -0,0 +1,43 @@
+part of angular.filter;
+
+/**
+ * Formats a number as text.
+ *
+ * If the input is not a number an empty string is returned.
+ *
+ *
+ * Usage:
+ *
+ *     {{ number_expression | number[:fractionSize] }}
+ *
+ */
+@NgFilter(name:'number')
+class NumberFilter {
+
+  Map<num, NumberFormat> nfs = new Map<num, NumberFormat>();
+
+  /**
+   *  [value]: the value to format
+   *
+   *  [fractionSize]: Number of decimal places to round the number to. If this
+   *    is not provided then the fraction size is computed from the current
+   *    locale's number formatting pattern. In the case of the default locale,
+   *    it will be 3.
+   */
+  call(value, [fractionSize = null]) {
+    if (value is String) value = double.parse(value);
+    if (!(value is num)) return value;
+    if (value.isNaN) return '';
+    var nf = nfs[fractionSize];
+    if (nf == null) {
+      nf = new NumberFormat();
+      nf.maximumIntegerDigits = 9;
+      if (fractionSize != null) {
+        nf.minimumFractionDigits = fractionSize;
+        nf.maximumFractionDigits = fractionSize;
+      }
+      nfs[fractionSize] = nf;
+    }
+    return nf.format(value);
+  }
+}