| 1 | this.workbox = this.workbox || {};
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| 2 | this.workbox.navigationPreload = (function (exports, logger_mjs) {
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| 3 | ;
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| 4 |
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| 5 | try {
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| 6 | self['workbox:navigation-preload:4.1.1'] && _();
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| 7 | } catch (e) {} // eslint-disable-line
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| 8 |
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| 9 | /*
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| 10 | Copyright 2018 Google LLC
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| 11 |
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| 12 | Use of this source code is governed by an MIT-style
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| 13 | license that can be found in the LICENSE file or at
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| 14 | https://opensource.org/licenses/MIT.
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| 15 | */
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| 16 | /**
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| 17 | * @return {boolean} Whether or not the current browser supports enabling
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| 18 | * navigation preload.
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| 19 | *
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| 20 | * @memberof workbox.navigationPreload
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| 21 | */
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| 22 |
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| 23 | function isSupported() {
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| 24 | return Boolean(self.registration && self.registration.navigationPreload);
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| 25 | }
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| 26 |
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| 27 | /*
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| 28 | Copyright 2018 Google LLC
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| 29 |
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| 30 | Use of this source code is governed by an MIT-style
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| 31 | license that can be found in the LICENSE file or at
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| 32 | https://opensource.org/licenses/MIT.
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| 33 | */
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| 34 | /**
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| 35 | * If the browser supports Navigation Preload, then this will disable it.
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| 36 | *
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| 37 | * @memberof workbox.navigationPreload
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| 38 | */
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| 39 |
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| 40 | function disable() {
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| 41 | if (isSupported()) {
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| 42 | self.addEventListener('activate', event => {
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| 43 | event.waitUntil(self.registration.navigationPreload.disable().then(() => {
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| 44 | {
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| 45 | logger_mjs.logger.log(`Navigation preload is disabled.`);
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| 46 | }
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| 47 | }));
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| 48 | });
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| 49 | } else {
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| 50 | {
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| 51 | logger_mjs.logger.log(`Navigation preload is not supported in this browser.`);
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| 52 | }
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | /*
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| 57 | Copyright 2018 Google LLC
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| 58 |
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| 59 | Use of this source code is governed by an MIT-style
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| 60 | license that can be found in the LICENSE file or at
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| 61 | https://opensource.org/licenses/MIT.
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| 62 | */
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| 63 | /**
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| 64 | * If the browser supports Navigation Preload, then this will enable it.
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| 65 | *
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| 66 | * @param {string} [headerValue] Optionally, allows developers to
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| 67 | * [override](https://developers.google.com/web/updates/2017/02/navigation-preload#changing_the_header)
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| 68 | * the value of the `Service-Worker-Navigation-Preload` header which will be
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| 69 | * sent to the server when making the navigation request.
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| 70 | *
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| 71 | * @memberof workbox.navigationPreload
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| 72 | */
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| 73 |
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| 74 | function enable(headerValue) {
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| 75 | if (isSupported()) {
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| 76 | self.addEventListener('activate', event => {
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| 77 | event.waitUntil(self.registration.navigationPreload.enable().then(() => {
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| 78 | // Defaults to Service-Worker-Navigation-Preload: true if not set.
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| 79 | if (headerValue) {
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| 80 | self.registration.navigationPreload.setHeaderValue(headerValue);
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| 81 | }
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| 82 |
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| 83 | {
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| 84 | logger_mjs.logger.log(`Navigation preload is enabled.`);
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| 85 | }
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| 86 | }));
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| 87 | });
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| 88 | } else {
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| 89 | {
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| 90 | logger_mjs.logger.log(`Navigation preload is not supported in this browser.`);
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| 91 | }
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| 92 | }
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| 93 | }
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| 94 |
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| 95 | /*
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| 96 | Copyright 2018 Google LLC
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| 97 |
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| 98 | Use of this source code is governed by an MIT-style
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| 99 | license that can be found in the LICENSE file or at
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| 100 | https://opensource.org/licenses/MIT.
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| 101 | */
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| 102 |
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| 103 | exports.disable = disable;
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| 104 | exports.enable = enable;
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| 105 | exports.isSupported = isSupported;
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| 106 |
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| 107 | return exports;
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| 108 |
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| 109 | }({}, workbox.core._private));
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| 110 |
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