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Diffstat (limited to 'node_modules/babel-plugin-transform-es2015-block-scoping/lib/tdz.js')
-rw-r--r--node_modules/babel-plugin-transform-es2015-block-scoping/lib/tdz.js97
1 files changed, 0 insertions, 97 deletions
diff --git a/node_modules/babel-plugin-transform-es2015-block-scoping/lib/tdz.js b/node_modules/babel-plugin-transform-es2015-block-scoping/lib/tdz.js
deleted file mode 100644
index 9137fed..0000000
--- a/node_modules/babel-plugin-transform-es2015-block-scoping/lib/tdz.js
+++ /dev/null
@@ -1,97 +0,0 @@
-"use strict";
-
-exports.__esModule = true;
-exports.visitor = undefined;
-
-var _babelTypes = require("babel-types");
-
-var t = _interopRequireWildcard(_babelTypes);
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
-
-function getTDZStatus(refPath, bindingPath) {
- var executionStatus = bindingPath._guessExecutionStatusRelativeTo(refPath);
-
- if (executionStatus === "before") {
- return "inside";
- } else if (executionStatus === "after") {
- return "outside";
- } else {
- return "maybe";
- }
-}
-
-function buildTDZAssert(node, file) {
- return t.callExpression(file.addHelper("temporalRef"), [node, t.stringLiteral(node.name), file.addHelper("temporalUndefined")]);
-}
-
-function isReference(node, scope, state) {
- var declared = state.letReferences[node.name];
- if (!declared) return false;
-
- return scope.getBindingIdentifier(node.name) === declared;
-}
-
-var visitor = exports.visitor = {
- ReferencedIdentifier: function ReferencedIdentifier(path, state) {
- if (!this.file.opts.tdz) return;
-
- var node = path.node,
- parent = path.parent,
- scope = path.scope;
-
-
- if (path.parentPath.isFor({ left: node })) return;
- if (!isReference(node, scope, state)) return;
-
- var bindingPath = scope.getBinding(node.name).path;
-
- var status = getTDZStatus(path, bindingPath);
- if (status === "inside") return;
-
- if (status === "maybe") {
- var assert = buildTDZAssert(node, state.file);
-
- bindingPath.parent._tdzThis = true;
-
- path.skip();
-
- if (path.parentPath.isUpdateExpression()) {
- if (parent._ignoreBlockScopingTDZ) return;
- path.parentPath.replaceWith(t.sequenceExpression([assert, parent]));
- } else {
- path.replaceWith(assert);
- }
- } else if (status === "outside") {
- path.replaceWith(t.throwStatement(t.inherits(t.newExpression(t.identifier("ReferenceError"), [t.stringLiteral(node.name + " is not defined - temporal dead zone")]), node)));
- }
- },
-
-
- AssignmentExpression: {
- exit: function exit(path, state) {
- if (!this.file.opts.tdz) return;
-
- var node = path.node;
-
- if (node._ignoreBlockScopingTDZ) return;
-
- var nodes = [];
- var ids = path.getBindingIdentifiers();
-
- for (var name in ids) {
- var id = ids[name];
-
- if (isReference(id, path.scope, state)) {
- nodes.push(buildTDZAssert(id, state.file));
- }
- }
-
- if (nodes.length) {
- node._ignoreBlockScopingTDZ = true;
- nodes.push(node);
- path.replaceWithMultiple(nodes.map(t.expressionStatement));
- }
- }
- }
-}; \ No newline at end of file