shift73k/assets_old/node_modules/@babel/helper-create-class-features-plugin/lib/misc.js

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.injectInitialization = injectInitialization;
exports.extractComputedKeys = extractComputedKeys;
var _core = require("@babel/core");
var _helperReplaceSupers = require("@babel/helper-replace-supers");
const findBareSupers = _core.traverse.visitors.merge([{
Super(path) {
const {
node,
parentPath
} = path;
if (parentPath.isCallExpression({
callee: node
})) {
this.push(parentPath);
}
}
}, _helperReplaceSupers.environmentVisitor]);
const referenceVisitor = {
"TSTypeAnnotation|TypeAnnotation"(path) {
path.skip();
},
ReferencedIdentifier(path) {
if (this.scope.hasOwnBinding(path.node.name)) {
this.scope.rename(path.node.name);
path.skip();
}
}
};
function handleClassTDZ(path, state) {
if (state.classBinding && state.classBinding === path.scope.getBinding(path.node.name)) {
const classNameTDZError = state.file.addHelper("classNameTDZError");
const throwNode = _core.types.callExpression(classNameTDZError, [_core.types.stringLiteral(path.node.name)]);
path.replaceWith(_core.types.sequenceExpression([throwNode, path.node]));
path.skip();
}
}
const classFieldDefinitionEvaluationTDZVisitor = {
ReferencedIdentifier: handleClassTDZ
};
function injectInitialization(path, constructor, nodes, renamer) {
if (!nodes.length) return;
const isDerived = !!path.node.superClass;
if (!constructor) {
const newConstructor = _core.types.classMethod("constructor", _core.types.identifier("constructor"), [], _core.types.blockStatement([]));
if (isDerived) {
newConstructor.params = [_core.types.restElement(_core.types.identifier("args"))];
newConstructor.body.body.push(_core.template.statement.ast`super(...args)`);
}
[constructor] = path.get("body").unshiftContainer("body", newConstructor);
}
if (renamer) {
renamer(referenceVisitor, {
scope: constructor.scope
});
}
if (isDerived) {
const bareSupers = [];
constructor.traverse(findBareSupers, bareSupers);
let isFirst = true;
for (const bareSuper of bareSupers) {
if (isFirst) {
bareSuper.insertAfter(nodes);
isFirst = false;
} else {
bareSuper.insertAfter(nodes.map(n => _core.types.cloneNode(n)));
}
}
} else {
constructor.get("body").unshiftContainer("body", nodes);
}
}
function extractComputedKeys(ref, path, computedPaths, file) {
const declarations = [];
const state = {
classBinding: path.node.id && path.scope.getBinding(path.node.id.name),
file
};
for (const computedPath of computedPaths) {
const computedKey = computedPath.get("key");
if (computedKey.isReferencedIdentifier()) {
handleClassTDZ(computedKey, state);
} else {
computedKey.traverse(classFieldDefinitionEvaluationTDZVisitor, state);
}
const computedNode = computedPath.node;
if (!computedKey.isConstantExpression()) {
const ident = path.scope.generateUidIdentifierBasedOnNode(computedNode.key);
path.scope.push({
id: ident,
kind: "let"
});
declarations.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(ident), computedNode.key)));
computedNode.key = _core.types.cloneNode(ident);
}
}
return declarations;
}