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tony-sull 2022-06-27 18:28:16 +00:00 committed by github-actions[bot]
parent 79fe09fa30
commit cb3fcdde6a
6 changed files with 48 additions and 25 deletions
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6
packages/integrations/prefetch/@types/network-information.d.ts vendored
View file

@ -1,4 +1,4 @@
export { };
export {};
declare global {
interface NetworkInformation {
@ -9,7 +9,7 @@ declare global {
}
var NetworkInformation: {
prototype: NetworkInformation;
new(): NetworkInformation;
prototype: NetworkInformation;
new (): NetworkInformation;
};
}

23
packages/integrations/prefetch/src/client.ts
View file

@ -66,24 +66,27 @@ export interface PrefetchOptions {
selector?: string;
/**
* The number of pages that can be prefetched concurrently.
*
*
* @default 1
*/
throttle?: number;
}
export default function prefetch({ selector = 'a[href][rel~="prefetch"]', throttle = 1 }: PrefetchOptions) {
export default function prefetch({
selector = 'a[href][rel~="prefetch"]',
throttle = 1,
}: PrefetchOptions) {
const conn = navigator.connection;
if (typeof conn !== 'undefined') {
// Don't prefetch if using 2G or if Save-Data is enabled.
if (conn.saveData) {
return Promise.reject(new Error('Cannot prefetch, Save-Data is enabled'));
}
if (/2g/.test(conn.effectiveType)) {
return Promise.reject(new Error('Cannot prefetch, network conditions are poor'));
}
}
// Don't prefetch if using 2G or if Save-Data is enabled.
if (conn.saveData) {
return Promise.reject(new Error('Cannot prefetch, Save-Data is enabled'));
}
if (/2g/.test(conn.effectiveType)) {
return Promise.reject(new Error('Cannot prefetch, network conditions are poor'));
}
}
const [toAdd, isDone] = throttles(throttle);

8
packages/integrations/prefetch/src/index.ts
View file

@ -9,9 +9,11 @@ export default function (options: PrefetchOptions = {}): AstroIntegration {
// Inject the necessary polyfills on every page (inlined for speed).
injectScript(
'page',
`import prefetch from "@astrojs/prefetch/client.js"; prefetch(${JSON.stringify(options)});`
`import prefetch from "@astrojs/prefetch/client.js"; prefetch(${JSON.stringify(
options
)});`
);
}
}
},
},
};
}

20
packages/integrations/prefetch/test/basic-prefetch.test.js
View file

@ -25,8 +25,14 @@ test.describe('Basic prefetch', () => {
await page.waitForLoadState('networkidle');
await expect(requests.has(astro.resolveUrl('/about')), '/about was prefetched').toBeTruthy();
await expect(requests.has(astro.resolveUrl('/contact')), '/contact was prefetched').toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/about')),
'/about was prefetched'
).toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/contact')),
'/contact was prefetched'
).toBeTruthy();
await expect(requests.has(astro.resolveUrl('/admin')), '/admin was skipped').toBeFalsy();
});
});
@ -55,8 +61,14 @@ test.describe('Basic prefetch', () => {
await page.waitForLoadState('networkidle');
await expect(requests.has(astro.resolveUrl('/about')), '/about was prefetched').toBeTruthy();
await expect(requests.has(astro.resolveUrl('/contact')), '/contact was prefetched').toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/about')),
'/about was prefetched'
).toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/contact')),
'/contact was prefetched'
).toBeTruthy();
await expect(requests.has(astro.resolveUrl('/admin')), '/admin was skipped').toBeFalsy();
});
});

14
packages/integrations/prefetch/test/custom-selectors.test.js
View file

@ -6,9 +6,9 @@ const test = testFactory({
root: './fixtures/basic-prefetch/',
integrations: [
prefetch({
selector: 'a[href="/contact"]'
selector: 'a[href="/contact"]',
}),
]
],
});
test.describe('Custom prefetch selectors', () => {
@ -34,7 +34,10 @@ test.describe('Custom prefetch selectors', () => {
await page.waitForLoadState('networkidle');
await expect(requests.has(astro.resolveUrl('/about')), '/about was skipped').toBeFalsy();
await expect(requests.has(astro.resolveUrl('/contact')), '/contact was prefetched').toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/contact')),
'/contact was prefetched'
).toBeTruthy();
await expect(requests.has(astro.resolveUrl('/admin')), '/admin was skipped').toBeFalsy();
});
});
@ -64,7 +67,10 @@ test.describe('Custom prefetch selectors', () => {
await page.waitForLoadState('networkidle');
await expect(requests.has(astro.resolveUrl('/about')), '/about was skipped').toBeFalsy();
await expect(requests.has(astro.resolveUrl('/contact')), '/contact was prefetched').toBeTruthy();
await expect(
requests.has(astro.resolveUrl('/contact')),
'/contact was prefetched'
).toBeTruthy();
await expect(requests.has(astro.resolveUrl('/admin')), '/admin was skipped').toBeFalsy();
});
});

2
packages/integrations/prefetch/tsconfig.json
View file

@ -5,6 +5,6 @@
"allowJs": true,
"module": "ES2020",
"outDir": "./dist",
"target": "ES2020",
"target": "ES2020"
}
}