[ui/fieldWildcard] add lib to match names based on field-style wildcards

src/ui/public/__tests__/field_wildcard.js

@@ -0,0 +1,65 @@
+import expect from 'expect.js';
+
+import { makeRegEx, fieldWildcardFilter } from '../field_wildcard';
+
+describe('fieldWildcard', function () {
+  describe('makeRegEx', function () {
+    it('matches * in any position', function () {
+      expect('aaaaaabbbbbbbcccccc').to.match(makeRegEx('*a*b*c*'));
+      expect('a1234').to.match(makeRegEx('*1234'));
+      expect('1234a').to.match(makeRegEx('1234*'));
+      expect('12a34').to.match(makeRegEx('12a34'));
+    });
+  });
+
+  describe('filter', function () {
+    it('filters nothing when given an empty array', function () {
+      const filter = fieldWildcardFilter([]);
+      const original = [
+        'foo',
+        'bar',
+        'baz',
+        1234
+      ];
+
+      expect(original.filter(filter)).to.eql(original);
+    });
+
+    it('filters values that match the globs', function () {
+      const filter = fieldWildcardFilter([
+        'f*',
+        '*4'
+      ]);
+
+      const original = [
+        'foo',
+        'bar',
+        'baz',
+        1234
+      ];
+
+      expect(original.filter(filter)).to.eql(['bar', 'baz']);
+    });
+
+    it('handles weird values okay', function () {
+      const filter = fieldWildcardFilter([
+        'f*',
+        '*4',
+        'undefined'
+      ]);
+
+      const original = [
+        'foo',
+        null,
+        'bar',
+        undefined,
+        {},
+        [],
+        'baz',
+        1234
+      ];
+
+      expect(original.filter(filter)).to.eql([null, 'bar', {}, [], 'baz']);
+    });
+  });
+});

src/ui/public/field_wildcard.js

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+import { memoize } from 'lodash';
+
+export const makeRegEx = memoize(function makeRegEx(glob) {
+  return new RegExp(glob.replace(/\*/g, '.*'));
+});
+
+export function fieldWildcardFilter(globs) {
+  return function filter(val) {
+    return !globs.some(p => makeRegEx(p).test(val));
+  };
+}