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Revert "Revert defer page script injection (#758)"

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This reverts commit 7d52326eb7.
This commit is contained in:
eight 2019-08-26 23:51:47 +08:00 committed by GitHub
parent 0e9d5ce08c
commit 67930db04c
1 changed files with 11 additions and 4 deletions
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15
content/apply.js
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@ -88,10 +88,9 @@ const APPLY = (() => {
// Since it's easy to spoof the browser version in pre-Quantum FF we're checking
// for getPreventDefault which got removed in FF59 https://bugzil.la/691151
const EVENT_NAME = chrome.runtime.id;
const usePageScript = CHROME || IS_OWN_PAGE || Event.prototype.getPreventDefault ?
Promise.resolve(false) : injectPageScript();
let ready;
return (el, content, disabled) =>
usePageScript.then(ok => {
checkPageScript().then(ok => {
if (!ok) {
el.textContent = content;
// https://github.com/openstyles/stylus/issues/693
@ -107,6 +106,14 @@ const APPLY = (() => {
}
});
function checkPageScript() {
if (!ready) {
ready = CHROME || IS_OWN_PAGE || Event.prototype.getPreventDefault ?
Promise.resolve(false) : injectPageScript();
}
return ready;
}
function injectPageScript() {
const scriptContent = EVENT_NAME => {
document.currentScript.remove();
@ -149,7 +156,7 @@ const APPLY = (() => {
script.onerror = resolveFalse;
window.addEventListener('error', resolveFalse);
window.addEventListener(EVENT_NAME, handleInit);
document.documentElement.appendChild(script);
(document.head || document.documentElement).appendChild(script);
return promise.then(result => {
script.remove();
window.removeEventListener(EVENT_NAME, handleInit);