diff options
Diffstat (limited to 'frontend-old/node_modules/web-vitals/src/lib/runOnce.ts')
| -rw-r--r-- | frontend-old/node_modules/web-vitals/src/lib/runOnce.ts | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/frontend-old/node_modules/web-vitals/src/lib/runOnce.ts b/frontend-old/node_modules/web-vitals/src/lib/runOnce.ts new file mode 100644 index 0000000..f2de2ea --- /dev/null +++ b/frontend-old/node_modules/web-vitals/src/lib/runOnce.ts @@ -0,0 +1,25 @@ +/* + * Copyright 2022 Google LLC + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * https://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +export const runOnce = (cb: () => void) => { + let called = false; + return () => { + if (!called) { + cb(); + called = true; + } + }; +}; |
