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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/core-js/library/modules/_microtask.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/core-js/library/modules/_microtask.js')
| -rw-r--r-- | node_modules/core-js/library/modules/_microtask.js | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/node_modules/core-js/library/modules/_microtask.js b/node_modules/core-js/library/modules/_microtask.js new file mode 100644 index 00000000..b321c648 --- /dev/null +++ b/node_modules/core-js/library/modules/_microtask.js @@ -0,0 +1,69 @@ +var global = require('./_global'); +var macrotask = require('./_task').set; +var Observer = global.MutationObserver || global.WebKitMutationObserver; +var process = global.process; +var Promise = global.Promise; +var isNode = require('./_cof')(process) == 'process'; + +module.exports = function () { + var head, last, notify; + + var flush = function () { + var parent, fn; + if (isNode && (parent = process.domain)) parent.exit(); + while (head) { + fn = head.fn; + head = head.next; + try { + fn(); + } catch (e) { + if (head) notify(); + else last = undefined; + throw e; + } + } last = undefined; + if (parent) parent.enter(); + }; + + // Node.js + if (isNode) { + notify = function () { + process.nextTick(flush); + }; + // browsers with MutationObserver, except iOS Safari - https://github.com/zloirock/core-js/issues/339 + } else if (Observer && !(global.navigator && global.navigator.standalone)) { + var toggle = true; + var node = document.createTextNode(''); + new Observer(flush).observe(node, { characterData: true }); // eslint-disable-line no-new + notify = function () { + node.data = toggle = !toggle; + }; + // environments with maybe non-completely correct, but existent Promise + } else if (Promise && Promise.resolve) { + // Promise.resolve without an argument throws an error in LG WebOS 2 + var promise = Promise.resolve(undefined); + notify = function () { + promise.then(flush); + }; + // for other environments - macrotask based on: + // - setImmediate + // - MessageChannel + // - window.postMessag + // - onreadystatechange + // - setTimeout + } else { + notify = function () { + // strange IE + webpack dev server bug - use .call(global) + macrotask.call(global, flush); + }; + } + + return function (fn) { + var task = { fn: fn, next: undefined }; + if (last) last.next = task; + if (!head) { + head = task; + notify(); + } last = task; + }; +}; |
