1 files changed, 376 insertions, 0 deletions
diff --git a/node_modules/@babel/helper-module-transforms/lib/rewrite-live-references.js b/node_modules/@babel/helper-module-transforms/lib/rewrite-live-references.js
new file mode 100644
index 00000000..6ada457a
--- /dev/null
+++ b/node_modules/@babel/helper-module-transforms/lib/rewrite-live-references.js
@@ -0,0 +1,376 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = rewriteLiveReferences;
+var _assert = require("assert");
+var _core = require("@babel/core");
+var _helperSimpleAccess = require("@babel/helper-simple-access");
+const {
+  assignmentExpression,
+  cloneNode,
+  expressionStatement,
+  getOuterBindingIdentifiers,
+  identifier,
+  isArrowFunctionExpression,
+  isClassExpression,
+  isFunctionExpression,
+  isIdentifier,
+  isMemberExpression,
+  isVariableDeclaration,
+  jsxIdentifier,
+  jsxMemberExpression,
+  memberExpression,
+  numericLiteral,
+  sequenceExpression,
+  stringLiteral,
+  variableDeclaration,
+  variableDeclarator
+} = _core.types;
+function isInType(path) {
+  do {
+    switch (path.parent.type) {
+      case "TSTypeAnnotation":
+      case "TSTypeAliasDeclaration":
+      case "TSTypeReference":
+      case "TypeAnnotation":
+      case "TypeAlias":
+        return true;
+      case "ExportSpecifier":
+        return path.parentPath.parent.exportKind === "type";
+      default:
+        if (path.parentPath.isStatement() || path.parentPath.isExpression()) {
+          return false;
+        }
+    }
+  } while (path = path.parentPath);
+}
+function rewriteLiveReferences(programPath, metadata, wrapReference) {
+  const imported = new Map();
+  const exported = new Map();
+  const requeueInParent = path => {
+    programPath.requeue(path);
+  };
+  for (const [source, data] of metadata.source) {
+    for (const [localName, importName] of data.imports) {
+      imported.set(localName, [source, importName, null]);
+    }
+    for (const localName of data.importsNamespace) {
+      imported.set(localName, [source, null, localName]);
+    }
+  }
+  for (const [local, data] of metadata.local) {
+    let exportMeta = exported.get(local);
+    if (!exportMeta) {
+      exportMeta = [];
+      exported.set(local, exportMeta);
+    }
+    exportMeta.push(...data.names);
+  }
+  const rewriteBindingInitVisitorState = {
+    metadata,
+    requeueInParent,
+    scope: programPath.scope,
+    exported
+  };
+  programPath.traverse(rewriteBindingInitVisitor, rewriteBindingInitVisitorState);
+  const bindingNames = new Set([...Array.from(imported.keys()), ...Array.from(exported.keys())]);
+  {
+    (0, _helperSimpleAccess.default)(programPath, bindingNames, false);
+  }
+  const rewriteReferencesVisitorState = {
+    seen: new WeakSet(),
+    metadata,
+    requeueInParent,
+    scope: programPath.scope,
+    imported,
+    exported,
+    buildImportReference([source, importName, localName], identNode) {
+      const meta = metadata.source.get(source);
+      meta.referenced = true;
+      if (localName) {
+        if (meta.wrap) {
+          var _wrapReference;
+          identNode = (_wrapReference = wrapReference(identNode, meta.wrap)) != null ? _wrapReference : identNode;
+        }
+        return identNode;
+      }
+      let namespace = identifier(meta.name);
+      if (meta.wrap) {
+        var _wrapReference2;
+        namespace = (_wrapReference2 = wrapReference(namespace, meta.wrap)) != null ? _wrapReference2 : namespace;
+      }
+      if (importName === "default" && meta.interop === "node-default") {
+        return namespace;
+      }
+      const computed = metadata.stringSpecifiers.has(importName);
+      return memberExpression(namespace, computed ? stringLiteral(importName) : identifier(importName), computed);
+    }
+  };
+  programPath.traverse(rewriteReferencesVisitor, rewriteReferencesVisitorState);
+}
+const rewriteBindingInitVisitor = {
+  Scope(path) {
+    path.skip();
+  },
+  ClassDeclaration(path) {
+    const {
+      requeueInParent,
+      exported,
+      metadata
+    } = this;
+    const {
+      id
+    } = path.node;
+    if (!id) throw new Error("Expected class to have a name");
+    const localName = id.name;
+    const exportNames = exported.get(localName) || [];
+    if (exportNames.length > 0) {
+      const statement = expressionStatement(buildBindingExportAssignmentExpression(metadata, exportNames, identifier(localName), path.scope));
+      statement._blockHoist = path.node._blockHoist;
+      requeueInParent(path.insertAfter(statement)[0]);
+    }
+  },
+  VariableDeclaration(path) {
+    const {
+      requeueInParent,
+      exported,
+      metadata
+    } = this;
+    const isVar = path.node.kind === "var";
+    for (const decl of path.get("declarations")) {
+      const {
+        id
+      } = decl.node;
+      let {
+        init
+      } = decl.node;
+      if (isIdentifier(id) && exported.has(id.name) && !isArrowFunctionExpression(init) && (!isFunctionExpression(init) || init.id) && (!isClassExpression(init) || init.id)) {
+        if (!init) {
+          if (isVar) {
+            continue;
+          } else {
+            init = path.scope.buildUndefinedNode();
+          }
+        }
+        decl.node.init = buildBindingExportAssignmentExpression(metadata, exported.get(id.name), init, path.scope);
+        requeueInParent(decl.get("init"));
+      } else {
+        for (const localName of Object.keys(decl.getOuterBindingIdentifiers())) {
+          if (exported.has(localName)) {
+            const statement = expressionStatement(buildBindingExportAssignmentExpression(metadata, exported.get(localName), identifier(localName), path.scope));
+            statement._blockHoist = path.node._blockHoist;
+            requeueInParent(path.insertAfter(statement)[0]);
+          }
+        }
+      }
+    }
+  }
+};
+const buildBindingExportAssignmentExpression = (metadata, exportNames, localExpr, scope) => {
+  const exportsObjectName = metadata.exportName;
+  for (let currentScope = scope; currentScope != null; currentScope = currentScope.parent) {
+    if (currentScope.hasOwnBinding(exportsObjectName)) {
+      currentScope.rename(exportsObjectName);
+    }
+  }
+  return (exportNames || []).reduce((expr, exportName) => {
+    const {
+      stringSpecifiers
+    } = metadata;
+    const computed = stringSpecifiers.has(exportName);
+    return assignmentExpression("=", memberExpression(identifier(exportsObjectName), computed ? stringLiteral(exportName) : identifier(exportName), computed), expr);
+  }, localExpr);
+};
+const buildImportThrow = localName => {
+  return _core.template.expression.ast`
+    (function() {
+      throw new Error('"' + '${localName}' + '" is read-only.');
+    })()
+  `;
+};
+const rewriteReferencesVisitor = {
+  ReferencedIdentifier(path) {
+    const {
+      seen,
+      buildImportReference,
+      scope,
+      imported,
+      requeueInParent
+    } = this;
+    if (seen.has(path.node)) return;
+    seen.add(path.node);
+    const localName = path.node.name;
+    const importData = imported.get(localName);
+    if (importData) {
+      if (isInType(path)) {
+        throw path.buildCodeFrameError(`Cannot transform the imported binding "${localName}" since it's also used in a type annotation. ` + `Please strip type annotations using @babel/preset-typescript or @babel/preset-flow.`);
+      }
+      const localBinding = path.scope.getBinding(localName);
+      const rootBinding = scope.getBinding(localName);
+      if (rootBinding !== localBinding) return;
+      const ref = buildImportReference(importData, path.node);
+      ref.loc = path.node.loc;
+      if ((path.parentPath.isCallExpression({
+        callee: path.node
+      }) || path.parentPath.isOptionalCallExpression({
+        callee: path.node
+      }) || path.parentPath.isTaggedTemplateExpression({
+        tag: path.node
+      })) && isMemberExpression(ref)) {
+        path.replaceWith(sequenceExpression([numericLiteral(0), ref]));
+      } else if (path.isJSXIdentifier() && isMemberExpression(ref)) {
+        const {
+          object,
+          property
+        } = ref;
+        path.replaceWith(jsxMemberExpression(jsxIdentifier(object.name), jsxIdentifier(property.name)));
+      } else {
+        path.replaceWith(ref);
+      }
+      requeueInParent(path);
+      path.skip();
+    }
+  },
+  UpdateExpression(path) {
+    const {
+      scope,
+      seen,
+      imported,
+      exported,
+      requeueInParent,
+      buildImportReference
+    } = this;
+    if (seen.has(path.node)) return;
+    seen.add(path.node);
+    const arg = path.get("argument");
+    if (arg.isMemberExpression()) return;
+    const update = path.node;
+    if (arg.isIdentifier()) {
+      const localName = arg.node.name;
+      if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
+        return;
+      }
+      const exportedNames = exported.get(localName);
+      const importData = imported.get(localName);
+      if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) {
+        if (importData) {
+          path.replaceWith(assignmentExpression(update.operator[0] + "=", buildImportReference(importData, arg.node), buildImportThrow(localName)));
+        } else if (update.prefix) {
+          path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, cloneNode(update), path.scope));
+        } else {
+          const ref = scope.generateDeclaredUidIdentifier(localName);
+          path.replaceWith(sequenceExpression([assignmentExpression("=", cloneNode(ref), cloneNode(update)), buildBindingExportAssignmentExpression(this.metadata, exportedNames, identifier(localName), path.scope), cloneNode(ref)]));
+        }
+      }
+    }
+    requeueInParent(path);
+    path.skip();
+  },
+  AssignmentExpression: {
+    exit(path) {
+      const {
+        scope,
+        seen,
+        imported,
+        exported,
+        requeueInParent,
+        buildImportReference
+      } = this;
+      if (seen.has(path.node)) return;
+      seen.add(path.node);
+      const left = path.get("left");
+      if (left.isMemberExpression()) return;
+      if (left.isIdentifier()) {
+        const localName = left.node.name;
+        if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
+          return;
+        }
+        const exportedNames = exported.get(localName);
+        const importData = imported.get(localName);
+        if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) {
+          _assert(path.node.operator === "=", "Path was not simplified");
+          const assignment = path.node;
+          if (importData) {
+            assignment.left = buildImportReference(importData, left.node);
+            assignment.right = sequenceExpression([assignment.right, buildImportThrow(localName)]);
+          }
+          path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, assignment, path.scope));
+          requeueInParent(path);
+        }
+      } else {
+        const ids = left.getOuterBindingIdentifiers();
+        const programScopeIds = Object.keys(ids).filter(localName => scope.getBinding(localName) === path.scope.getBinding(localName));
+        const id = programScopeIds.find(localName => imported.has(localName));
+        if (id) {
+          path.node.right = sequenceExpression([path.node.right, buildImportThrow(id)]);
+        }
+        const items = [];
+        programScopeIds.forEach(localName => {
+          const exportedNames = exported.get(localName) || [];
+          if (exportedNames.length > 0) {
+            items.push(buildBindingExportAssignmentExpression(this.metadata, exportedNames, identifier(localName), path.scope));
+          }
+        });
+        if (items.length > 0) {
+          let node = sequenceExpression(items);
+          if (path.parentPath.isExpressionStatement()) {
+            node = expressionStatement(node);
+            node._blockHoist = path.parentPath.node._blockHoist;
+          }
+          const statement = path.insertAfter(node)[0];
+          requeueInParent(statement);
+        }
+      }
+    }
+  },
+  "ForOfStatement|ForInStatement"(path) {
+    const {
+      scope,
+      node
+    } = path;
+    const {
+      left
+    } = node;
+    const {
+      exported,
+      imported,
+      scope: programScope
+    } = this;
+    if (!isVariableDeclaration(left)) {
+      let didTransformExport = false,
+        importConstViolationName;
+      const loopBodyScope = path.get("body").scope;
+      for (const name of Object.keys(getOuterBindingIdentifiers(left))) {
+        if (programScope.getBinding(name) === scope.getBinding(name)) {
+          if (exported.has(name)) {
+            didTransformExport = true;
+            if (loopBodyScope.hasOwnBinding(name)) {
+              loopBodyScope.rename(name);
+            }
+          }
+          if (imported.has(name) && !importConstViolationName) {
+            importConstViolationName = name;
+          }
+        }
+      }
+      if (!didTransformExport && !importConstViolationName) {
+        return;
+      }
+      path.ensureBlock();
+      const bodyPath = path.get("body");
+      const newLoopId = scope.generateUidIdentifierBasedOnNode(left);
+      path.get("left").replaceWith(variableDeclaration("let", [variableDeclarator(cloneNode(newLoopId))]));
+      scope.registerDeclaration(path.get("left"));
+      if (didTransformExport) {
+        bodyPath.unshiftContainer("body", expressionStatement(assignmentExpression("=", left, newLoopId)));
+      }
+      if (importConstViolationName) {
+        bodyPath.unshiftContainer("body", expressionStatement(buildImportThrow(importConstViolationName)));
+      }
+    }
+  }
+};
+
+//# sourceMappingURL=rewrite-live-references.js.map