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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/@babel/plugin-transform-new-target/lib | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/@babel/plugin-transform-new-target/lib')
| -rw-r--r-- | node_modules/@babel/plugin-transform-new-target/lib/index.js | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/node_modules/@babel/plugin-transform-new-target/lib/index.js b/node_modules/@babel/plugin-transform-new-target/lib/index.js new file mode 100644 index 00000000..c8491997 --- /dev/null +++ b/node_modules/@babel/plugin-transform-new-target/lib/index.js @@ -0,0 +1,89 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = void 0; + +function _helperPluginUtils() { + const data = require("@babel/helper-plugin-utils"); + + _helperPluginUtils = function _helperPluginUtils() { + return data; + }; + + return data; +} + +function _core() { + const data = require("@babel/core"); + + _core = function _core() { + return data; + }; + + return data; +} + +var _default = (0, _helperPluginUtils().declare)(api => { + api.assertVersion(7); + return { + name: "transform-new-target", + visitor: { + MetaProperty(path) { + const meta = path.get("meta"); + const property = path.get("property"); + const scope = path.scope; + + if (meta.isIdentifier({ + name: "new" + }) && property.isIdentifier({ + name: "target" + })) { + const func = path.findParent(path => { + if (path.isClass()) return true; + + if (path.isFunction() && !path.isArrowFunctionExpression()) { + if (path.isClassMethod({ + kind: "constructor" + })) { + return false; + } + + return true; + } + + return false; + }); + + if (!func) { + throw path.buildCodeFrameError("new.target must be under a (non-arrow) function or a class."); + } + + const node = func.node; + + if (!node.id) { + if (func.isMethod()) { + path.replaceWith(scope.buildUndefinedNode()); + return; + } + + node.id = scope.generateUidIdentifier("target"); + } + + const constructor = _core().types.memberExpression(_core().types.thisExpression(), _core().types.identifier("constructor")); + + if (func.isClass()) { + path.replaceWith(constructor); + return; + } + + path.replaceWith(_core().types.conditionalExpression(_core().types.binaryExpression("instanceof", _core().types.thisExpression(), _core().types.cloneNode(node.id)), constructor, scope.buildUndefinedNode())); + } + } + + } + }; +}); + +exports.default = _default;
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