vue hello world项目
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _pluginSyntaxPrivatePropertyInObject = require("@babel/plugin-syntax-private-property-in-object");
var _helperCreateClassFeaturesPlugin = require("@babel/helper-create-class-features-plugin");
var _helperAnnotateAsPure = require("@babel/helper-annotate-as-pure");
var _default = (0, _helperPluginUtils.declare)(({
assertVersion,
types: t,
template
}, {
loose
}) => {
assertVersion(7);
const classWeakSets = new WeakMap();
const fieldsWeakSets = new WeakMap();
function unshadow(name, targetScope, scope) {
while (scope !== targetScope) {
if (scope.hasOwnBinding(name)) scope.rename(name);
scope = scope.parent;
}
}
function injectToFieldInit(fieldPath, expr, before = false) {
if (fieldPath.node.value) {
if (before) {
fieldPath.get("value").insertBefore(expr);
} else {
fieldPath.get("value").insertAfter(expr);
}
} else {
fieldPath.set("value", t.unaryExpression("void", expr));
}
}
function injectInitialization(classPath, init) {
let firstFieldPath;
let consturctorPath;
for (const el of classPath.get("body.body")) {
if ((el.isClassProperty() || el.isClassPrivateProperty()) && !el.node.static) {
firstFieldPath = el;
break;
}
if (!consturctorPath && el.isClassMethod({
kind: "constructor"
})) {
consturctorPath = el;
}
}
if (firstFieldPath) {
injectToFieldInit(firstFieldPath, init, true);
} else {
(0, _helperCreateClassFeaturesPlugin.injectInitialization)(classPath, consturctorPath, [t.expressionStatement(init)]);
}
}
function getWeakSetId(weakSets, outerClass, reference, name = "", inject) {
let id = classWeakSets.get(reference.node);
if (!id) {
id = outerClass.scope.generateUidIdentifier(`${name || ""} brandCheck`);
classWeakSets.set(reference.node, id);
inject(reference, template.expression.ast`${t.cloneNode(id)}.add(this)`);
const newExpr = t.newExpression(t.identifier("WeakSet"), []);
(0, _helperAnnotateAsPure.default)(newExpr);
outerClass.insertBefore(template.ast`var ${id} = ${newExpr}`);
}
return t.cloneNode(id);
}
return {
name: "proposal-private-property-in-object",
inherits: _pluginSyntaxPrivatePropertyInObject.default,
pre() {
(0, _helperCreateClassFeaturesPlugin.enableFeature)(this.file, _helperCreateClassFeaturesPlugin.FEATURES.privateIn, loose);
},
visitor: {
BinaryExpression(path) {
const {
node
} = path;
if (node.operator !== "in") return;
if (!t.isPrivateName(node.left)) return;
const {
name
} = node.left.id;
let privateElement;
const outerClass = path.findParent(path => {
if (!path.isClass()) return false;
privateElement = path.get("body.body").find(({
node
}) => t.isPrivate(node) && node.key.id.name === name);
return !!privateElement;
});
if (outerClass.parentPath.scope.path.isPattern()) {
outerClass.replaceWith(template.ast`(() => ${outerClass.node})()`);
return;
}
if (privateElement.isMethod()) {
if (privateElement.node.static) {
if (outerClass.node.id) {
unshadow(outerClass.node.id.name, outerClass.scope, path.scope);
} else {
outerClass.set("id", path.scope.generateUidIdentifier("class"));
}
path.replaceWith(template.expression.ast`
${t.cloneNode(outerClass.node.id)} === ${path.node.right}
`);
} else {
var _outerClass$node$id;
const id = getWeakSetId(classWeakSets, outerClass, outerClass, (_outerClass$node$id = outerClass.node.id) == null ? void 0 : _outerClass$node$id.name, injectInitialization);
path.replaceWith(template.expression.ast`${id}.has(${path.node.right})`);
}
} else {
const id = getWeakSetId(fieldsWeakSets, outerClass, privateElement, privateElement.node.key.id.name, injectToFieldInit);
path.replaceWith(template.expression.ast`${id}.has(${path.node.right})`);
}
}
}
};
});
exports.default = _default;