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coopwire-hypothesis
Commit 3cb74643 authored by Robert Knight's avatar Robert Knight
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Fix browser support check failure if boot script loaded before body 

Fix a false negative in the test for whether the current browser is
supported if the Hypothesis boot script is included in the `<head>` of
the page (before the `<body>`). In this case `document.body` is `null`.
parent 9906ff6f
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src/boot/browser-check.js
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...@@ -17,7 +17,7 @@ export function isBrowserSupported() { ...@@ -17,7 +17,7 @@ export function isBrowserSupported() {
// DOM API checks for frequently-used APIs. // DOM API checks for frequently-used APIs.
() => new URL(document.location.href), // URL constructor. () => new URL(document.location.href), // URL constructor.
() => new Request('https://hypothes.is'), // Part of the `fetch` API. () => new Request('https://hypothes.is'), // Part of the `fetch` API.
() => document.body.prepend.name, // Element.prepend() method. () => Element.prototype.prepend.name,
// DOM API checks for less frequently-used APIs. // DOM API checks for less frequently-used APIs.
// These are less likely to have been polyfilled by the host page. // These are less likely to have been polyfilled by the host page.
......
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