1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 |
- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = hoistVariables;
-
- var t = require("@babel/types");
-
- const visitor = {
- Scope(path, state) {
- if (state.kind === "let") path.skip();
- },
-
- FunctionParent(path) {
- path.skip();
- },
-
- VariableDeclaration(path, state) {
- if (state.kind && path.node.kind !== state.kind) return;
- const nodes = [];
- const declarations = path.get("declarations");
- let firstId;
-
- for (const declar of declarations) {
- firstId = declar.node.id;
-
- if (declar.node.init) {
- nodes.push(t.expressionStatement(t.assignmentExpression("=", declar.node.id, declar.node.init)));
- }
-
- for (const name of Object.keys(declar.getBindingIdentifiers())) {
- state.emit(t.identifier(name), name, declar.node.init !== null);
- }
- }
-
- if (path.parentPath.isFor({
- left: path.node
- })) {
- path.replaceWith(firstId);
- } else {
- path.replaceWithMultiple(nodes);
- }
- }
-
- };
-
- function hoistVariables(path, emit, kind = "var") {
- path.traverse(visitor, {
- kind,
- emit
- });
- }
|