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- {"version":3,"file":"onHidden.js","sources":["../../../../../src/browser/web-vitals/lib/onHidden.ts"],"sourcesContent":["/*\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * https://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { WINDOW } from '../../types';\n\nexport interface OnHiddenCallback {\n (event: Event): void;\n}\n\nexport const onHidden = (cb: OnHiddenCallback, once?: boolean): void => {\n const onHiddenOrPageHide = (event: Event): void => {\n if (event.type === 'pagehide' || WINDOW.document.visibilityState === 'hidden') {\n cb(event);\n if (once) {\n removeEventListener('visibilitychange', onHiddenOrPageHide, true);\n removeEventListener('pagehide', onHiddenOrPageHide, true);\n }\n }\n };\n addEventListener('visibilitychange', onHiddenOrPageHide, true);\n // Some browsers have buggy implementations of visibilitychange,\n // so we use pagehide in addition, just to be safe.\n addEventListener('pagehide', onHiddenOrPageHide, true);\n};\n"],"names":["WINDOW"],"mappings":";;;;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;MAQa,QAAS,GAAE,CAAC,EAAE,EAAoB,IAAI,KAAqB;AACxE,EAAE,MAAM,kBAAA,GAAqB,CAAC,KAAK,KAAkB;AACrD,IAAI,IAAI,KAAK,CAAC,SAAS,UAAA,IAAcA,YAAM,CAAC,QAAQ,CAAC,eAAgB,KAAI,QAAQ,EAAE;AACnF,MAAM,EAAE,CAAC,KAAK,CAAC,CAAA;AACf,MAAM,IAAI,IAAI,EAAE;AAChB,QAAQ,mBAAmB,CAAC,kBAAkB,EAAE,kBAAkB,EAAE,IAAI,CAAC,CAAA;AACzE,QAAQ,mBAAmB,CAAC,UAAU,EAAE,kBAAkB,EAAE,IAAI,CAAC,CAAA;AACjE,OAAM;AACN,KAAI;AACJ,GAAG,CAAA;AACH,EAAE,gBAAgB,CAAC,kBAAkB,EAAE,kBAAkB,EAAE,IAAI,CAAC,CAAA;AAChE;AACA;AACA,EAAE,gBAAgB,CAAC,UAAU,EAAE,kBAAkB,EAAE,IAAI,CAAC,CAAA;AACxD;;;;"}
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