0.2.0 - Mid migration

web/node_modules/@babel/plugin-transform-classes/lib/index.js

@@ -0,0 +1,88 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+
+var _helperPluginUtils = require("@babel/helper-plugin-utils");
+
+var _helperAnnotateAsPure = require("@babel/helper-annotate-as-pure");
+
+var _helperFunctionName = require("@babel/helper-function-name");
+
+var _helperSplitExportDeclaration = require("@babel/helper-split-export-declaration");
+
+var _core = require("@babel/core");
+
+var _globals = require("globals");
+
+var _transformClass = require("./transformClass");
+
+const getBuiltinClasses = category => Object.keys(_globals[category]).filter(name => /^[A-Z]/.test(name));
+
+const builtinClasses = new Set([...getBuiltinClasses("builtin"), ...getBuiltinClasses("browser")]);
+
+var _default = (0, _helperPluginUtils.declare)((api, options) => {
+  var _api$assumption, _api$assumption2, _api$assumption3, _api$assumption4;
+
+  api.assertVersion(7);
+  const {
+    loose
+  } = options;
+  const setClassMethods = (_api$assumption = api.assumption("setClassMethods")) != null ? _api$assumption : options.loose;
+  const constantSuper = (_api$assumption2 = api.assumption("constantSuper")) != null ? _api$assumption2 : options.loose;
+  const superIsCallableConstructor = (_api$assumption3 = api.assumption("superIsCallableConstructor")) != null ? _api$assumption3 : options.loose;
+  const noClassCalls = (_api$assumption4 = api.assumption("noClassCalls")) != null ? _api$assumption4 : options.loose;
+  const VISITED = Symbol();
+  return {
+    name: "transform-classes",
+    visitor: {
+      ExportDefaultDeclaration(path) {
+        if (!path.get("declaration").isClassDeclaration()) return;
+        (0, _helperSplitExportDeclaration.default)(path);
+      },
+
+      ClassDeclaration(path) {
+        const {
+          node
+        } = path;
+        const ref = node.id || path.scope.generateUidIdentifier("class");
+        path.replaceWith(_core.types.variableDeclaration("let", [_core.types.variableDeclarator(ref, _core.types.toExpression(node))]));
+      },
+
+      ClassExpression(path, state) {
+        const {
+          node
+        } = path;
+        if (node[VISITED]) return;
+        const inferred = (0, _helperFunctionName.default)(path);
+
+        if (inferred && inferred !== node) {
+          path.replaceWith(inferred);
+          return;
+        }
+
+        node[VISITED] = true;
+        path.replaceWith((0, _transformClass.default)(path, state.file, builtinClasses, loose, {
+          setClassMethods,
+          constantSuper,
+          superIsCallableConstructor,
+          noClassCalls
+        }));
+
+        if (path.isCallExpression()) {
+          (0, _helperAnnotateAsPure.default)(path);
+          const callee = path.get("callee");
+
+          if (callee.isArrowFunctionExpression()) {
+            callee.arrowFunctionToExpression();
+          }
+        }
+      }
+
+    }
+  };
+});
+
+exports.default = _default;

web/node_modules/@babel/plugin-transform-classes/lib/inline-createSuper-helpers.js

@@ -0,0 +1,72 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = addCreateSuperHelper;
+
+var _core = require("@babel/core");
+
+const helperIDs = new WeakMap();
+
+function addCreateSuperHelper(file) {
+  if (helperIDs.has(file)) {
+    return (_core.types.cloneNode || _core.types.clone)(helperIDs.get(file));
+  }
+
+  try {
+    return file.addHelper("createSuper");
+  } catch (_unused) {}
+
+  const id = file.scope.generateUidIdentifier("createSuper");
+  helperIDs.set(file, id);
+  const fn = helper({
+    CREATE_SUPER: id,
+    GET_PROTOTYPE_OF: file.addHelper("getPrototypeOf"),
+    POSSIBLE_CONSTRUCTOR_RETURN: file.addHelper("possibleConstructorReturn")
+  });
+  file.path.unshiftContainer("body", [fn]);
+  file.scope.registerDeclaration(file.path.get("body.0"));
+  return _core.types.cloneNode(id);
+}
+
+const helper = _core.template.statement`
+  function CREATE_SUPER(Derived) {
+    function isNativeReflectConstruct() {
+      if (typeof Reflect === "undefined" || !Reflect.construct) return false;
+
+      // core-js@3
+      if (Reflect.construct.sham) return false;
+
+      // Proxy can't be polyfilled. Every browser implemented
+      // proxies before or at the same time as Reflect.construct,
+      // so if they support Proxy they also support Reflect.construct.
+      if (typeof Proxy === "function") return true;
+
+      // Since Reflect.construct can't be properly polyfilled, some
+      // implementations (e.g. core-js@2) don't set the correct internal slots.
+      // Those polyfills don't allow us to subclass built-ins, so we need to
+      // use our fallback implementation.
+      try {
+        // If the internal slots aren't set, this throws an error similar to
+        //   TypeError: this is not a Date object.
+        Date.prototype.toString.call(Reflect.construct(Date, [], function() {}));
+        return true;
+      } catch (e) {
+        return false;
+      }
+    }
+
+    return function () {
+      var Super = GET_PROTOTYPE_OF(Derived), result;
+      if (isNativeReflectConstruct()) {
+        // NOTE: This doesn't work if this.__proto__.constructor has been modified.
+        var NewTarget = GET_PROTOTYPE_OF(this).constructor;
+        result = Reflect.construct(Super, arguments, NewTarget);
+      } else {
+        result = Super.apply(this, arguments);
+      }
+      return POSSIBLE_CONSTRUCTOR_RETURN(this, result);
+    }
+  }
+`;

web/node_modules/@babel/plugin-transform-classes/lib/transformClass.js

@@ -0,0 +1,606 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = transformClass;
+
+var _helperFunctionName = require("@babel/helper-function-name");
+
+var _helperReplaceSupers = require("@babel/helper-replace-supers");
+
+var _helperOptimiseCallExpression = require("@babel/helper-optimise-call-expression");
+
+var _core = require("@babel/core");
+
+var _helperAnnotateAsPure = require("@babel/helper-annotate-as-pure");
+
+var _inlineCreateSuperHelpers = require("./inline-createSuper-helpers");
+
+function buildConstructor(classRef, constructorBody, node) {
+  const func = _core.types.functionDeclaration(_core.types.cloneNode(classRef), [], constructorBody);
+
+  _core.types.inherits(func, node);
+
+  return func;
+}
+
+function transformClass(path, file, builtinClasses, isLoose, assumptions) {
+  const classState = {
+    parent: undefined,
+    scope: undefined,
+    node: undefined,
+    path: undefined,
+    file: undefined,
+    classId: undefined,
+    classRef: undefined,
+    superFnId: undefined,
+    superName: undefined,
+    superReturns: [],
+    isDerived: false,
+    extendsNative: false,
+    construct: undefined,
+    constructorBody: undefined,
+    userConstructor: undefined,
+    userConstructorPath: undefined,
+    hasConstructor: false,
+    staticPropBody: [],
+    body: [],
+    superThises: [],
+    pushedConstructor: false,
+    pushedInherits: false,
+    protoAlias: null,
+    isLoose: false,
+    dynamicKeys: new Map(),
+    methods: {
+      instance: {
+        hasComputed: false,
+        list: [],
+        map: new Map()
+      },
+      static: {
+        hasComputed: false,
+        list: [],
+        map: new Map()
+      }
+    }
+  };
+
+  const setState = newState => {
+    Object.assign(classState, newState);
+  };
+
+  const findThisesVisitor = _core.traverse.visitors.merge([_helperReplaceSupers.environmentVisitor, {
+    ThisExpression(path) {
+      classState.superThises.push(path);
+    }
+
+  }]);
+
+  function maybeCreateConstructor() {
+    let hasConstructor = false;
+    const paths = classState.path.get("body.body");
+
+    for (const path of paths) {
+      hasConstructor = path.equals("kind", "constructor");
+      if (hasConstructor) break;
+    }
+
+    if (hasConstructor) return;
+    let params, body;
+
+    if (classState.isDerived) {
+      const constructor = _core.template.expression.ast`
+        (function () {
+          super(...arguments);
+        })
+      `;
+      params = constructor.params;
+      body = constructor.body;
+    } else {
+      params = [];
+      body = _core.types.blockStatement([]);
+    }
+
+    classState.path.get("body").unshiftContainer("body", _core.types.classMethod("constructor", _core.types.identifier("constructor"), params, body));
+  }
+
+  function buildBody() {
+    maybeCreateConstructor();
+    pushBody();
+    verifyConstructor();
+
+    if (classState.userConstructor) {
+      const {
+        constructorBody,
+        userConstructor,
+        construct
+      } = classState;
+      constructorBody.body = constructorBody.body.concat(userConstructor.body.body);
+
+      _core.types.inherits(construct, userConstructor);
+
+      _core.types.inherits(constructorBody, userConstructor.body);
+    }
+
+    pushDescriptors();
+  }
+
+  function pushBody() {
+    const classBodyPaths = classState.path.get("body.body");
+
+    for (const path of classBodyPaths) {
+      const node = path.node;
+
+      if (path.isClassProperty()) {
+        throw path.buildCodeFrameError("Missing class properties transform.");
+      }
+
+      if (node.decorators) {
+        throw path.buildCodeFrameError("Method has decorators, put the decorator plugin before the classes one.");
+      }
+
+      if (_core.types.isClassMethod(node)) {
+        const isConstructor = node.kind === "constructor";
+        const replaceSupers = new _helperReplaceSupers.default({
+          methodPath: path,
+          objectRef: classState.classRef,
+          superRef: classState.superName,
+          constantSuper: assumptions.constantSuper,
+          file: classState.file,
+          refToPreserve: classState.classRef
+        });
+        replaceSupers.replace();
+        const superReturns = [];
+        path.traverse(_core.traverse.visitors.merge([_helperReplaceSupers.environmentVisitor, {
+          ReturnStatement(path) {
+            if (!path.getFunctionParent().isArrowFunctionExpression()) {
+              superReturns.push(path);
+            }
+          }
+
+        }]));
+
+        if (isConstructor) {
+          pushConstructor(superReturns, node, path);
+        } else {
+          pushMethod(node, path);
+        }
+      }
+    }
+  }
+
+  function pushDescriptors() {
+    pushInheritsToBody();
+    const {
+      body
+    } = classState;
+    const props = {
+      instance: null,
+      static: null
+    };
+
+    for (const placement of ["static", "instance"]) {
+      if (classState.methods[placement].list.length) {
+        props[placement] = classState.methods[placement].list.map(desc => {
+          const obj = _core.types.objectExpression([_core.types.objectProperty(_core.types.identifier("key"), desc.key)]);
+
+          for (const kind of ["get", "set", "value"]) {
+            if (desc[kind] != null) {
+              obj.properties.push(_core.types.objectProperty(_core.types.identifier(kind), desc[kind]));
+            }
+          }
+
+          return obj;
+        });
+      }
+    }
+
+    if (props.instance || props.static) {
+      let args = [_core.types.cloneNode(classState.classRef), props.instance ? _core.types.arrayExpression(props.instance) : _core.types.nullLiteral(), props.static ? _core.types.arrayExpression(props.static) : _core.types.nullLiteral()];
+      let lastNonNullIndex = 0;
+
+      for (let i = 0; i < args.length; i++) {
+        if (!_core.types.isNullLiteral(args[i])) lastNonNullIndex = i;
+      }
+
+      args = args.slice(0, lastNonNullIndex + 1);
+      body.push(_core.types.expressionStatement(_core.types.callExpression(classState.file.addHelper("createClass"), args)));
+    }
+  }
+
+  function wrapSuperCall(bareSuper, superRef, thisRef, body) {
+    const bareSuperNode = bareSuper.node;
+    let call;
+
+    if (assumptions.superIsCallableConstructor) {
+      bareSuperNode.arguments.unshift(_core.types.thisExpression());
+
+      if (bareSuperNode.arguments.length === 2 && _core.types.isSpreadElement(bareSuperNode.arguments[1]) && _core.types.isIdentifier(bareSuperNode.arguments[1].argument, {
+        name: "arguments"
+      })) {
+        bareSuperNode.arguments[1] = bareSuperNode.arguments[1].argument;
+        bareSuperNode.callee = _core.types.memberExpression(_core.types.cloneNode(superRef), _core.types.identifier("apply"));
+      } else {
+        bareSuperNode.callee = _core.types.memberExpression(_core.types.cloneNode(superRef), _core.types.identifier("call"));
+      }
+
+      call = _core.types.logicalExpression("||", bareSuperNode, _core.types.thisExpression());
+    } else {
+      call = (0, _helperOptimiseCallExpression.default)(_core.types.cloneNode(classState.superFnId), _core.types.thisExpression(), bareSuperNode.arguments, false);
+    }
+
+    if (bareSuper.parentPath.isExpressionStatement() && bareSuper.parentPath.container === body.node.body && body.node.body.length - 1 === bareSuper.parentPath.key) {
+      if (classState.superThises.length) {
+        call = _core.types.assignmentExpression("=", thisRef(), call);
+      }
+
+      bareSuper.parentPath.replaceWith(_core.types.returnStatement(call));
+    } else {
+      bareSuper.replaceWith(_core.types.assignmentExpression("=", thisRef(), call));
+    }
+  }
+
+  function verifyConstructor() {
+    if (!classState.isDerived) return;
+    const path = classState.userConstructorPath;
+    const body = path.get("body");
+    path.traverse(findThisesVisitor);
+
+    let thisRef = function () {
+      const ref = path.scope.generateDeclaredUidIdentifier("this");
+
+      thisRef = () => _core.types.cloneNode(ref);
+
+      return ref;
+    };
+
+    for (const thisPath of classState.superThises) {
+      const {
+        node,
+        parentPath
+      } = thisPath;
+
+      if (parentPath.isMemberExpression({
+        object: node
+      })) {
+        thisPath.replaceWith(thisRef());
+        continue;
+      }
+
+      thisPath.replaceWith(_core.types.callExpression(classState.file.addHelper("assertThisInitialized"), [thisRef()]));
+    }
+
+    const bareSupers = new Set();
+    path.traverse(_core.traverse.visitors.merge([_helperReplaceSupers.environmentVisitor, {
+      Super(path) {
+        const {
+          node,
+          parentPath
+        } = path;
+
+        if (parentPath.isCallExpression({
+          callee: node
+        })) {
+          bareSupers.add(parentPath);
+        }
+      }
+
+    }]));
+    let guaranteedSuperBeforeFinish = !!bareSupers.size;
+
+    for (const bareSuper of bareSupers) {
+      wrapSuperCall(bareSuper, classState.superName, thisRef, body);
+
+      if (guaranteedSuperBeforeFinish) {
+        bareSuper.find(function (parentPath) {
+          if (parentPath === path) {
+            return true;
+          }
+
+          if (parentPath.isLoop() || parentPath.isConditional() || parentPath.isArrowFunctionExpression()) {
+            guaranteedSuperBeforeFinish = false;
+            return true;
+          }
+        });
+      }
+    }
+
+    let wrapReturn;
+
+    if (classState.isLoose) {
+      wrapReturn = returnArg => {
+        const thisExpr = _core.types.callExpression(classState.file.addHelper("assertThisInitialized"), [thisRef()]);
+
+        return returnArg ? _core.types.logicalExpression("||", returnArg, thisExpr) : thisExpr;
+      };
+    } else {
+      wrapReturn = returnArg => _core.types.callExpression(classState.file.addHelper("possibleConstructorReturn"), [thisRef()].concat(returnArg || []));
+    }
+
+    const bodyPaths = body.get("body");
+
+    if (!bodyPaths.length || !bodyPaths.pop().isReturnStatement()) {
+      body.pushContainer("body", _core.types.returnStatement(guaranteedSuperBeforeFinish ? thisRef() : wrapReturn()));
+    }
+
+    for (const returnPath of classState.superReturns) {
+      returnPath.get("argument").replaceWith(wrapReturn(returnPath.node.argument));
+    }
+  }
+
+  function pushMethod(node, path) {
+    const scope = path ? path.scope : classState.scope;
+
+    if (node.kind === "method") {
+      if (processMethod(node, scope)) return;
+    }
+
+    const placement = node.static ? "static" : "instance";
+    const methods = classState.methods[placement];
+    const descKey = node.kind === "method" ? "value" : node.kind;
+    const key = _core.types.isNumericLiteral(node.key) || _core.types.isBigIntLiteral(node.key) ? _core.types.stringLiteral(String(node.key.value)) : _core.types.toComputedKey(node);
+
+    let fn = _core.types.toExpression(node);
+
+    if (_core.types.isStringLiteral(key)) {
+      if (node.kind === "method") {
+        fn = (0, _helperFunctionName.default)({
+          id: key,
+          node: node,
+          scope
+        });
+      }
+    } else {
+      methods.hasComputed = true;
+    }
+
+    let descriptor;
+
+    if (!methods.hasComputed && methods.map.has(key.value)) {
+      descriptor = methods.map.get(key.value);
+      descriptor[descKey] = fn;
+
+      if (descKey === "value") {
+        descriptor.get = null;
+        descriptor.set = null;
+      } else {
+        descriptor.value = null;
+      }
+    } else {
+      descriptor = {
+        key: key,
+        [descKey]: fn
+      };
+      methods.list.push(descriptor);
+
+      if (!methods.hasComputed) {
+        methods.map.set(key.value, descriptor);
+      }
+    }
+  }
+
+  function processMethod(node, scope) {
+    if (assumptions.setClassMethods && !node.decorators) {
+      let {
+        classRef
+      } = classState;
+
+      if (!node.static) {
+        insertProtoAliasOnce();
+        classRef = classState.protoAlias;
+      }
+
+      const methodName = _core.types.memberExpression(_core.types.cloneNode(classRef), node.key, node.computed || _core.types.isLiteral(node.key));
+
+      let func = _core.types.functionExpression(null, node.params, node.body, node.generator, node.async);
+
+      _core.types.inherits(func, node);
+
+      const key = _core.types.toComputedKey(node, node.key);
+
+      if (_core.types.isStringLiteral(key)) {
+        func = (0, _helperFunctionName.default)({
+          node: func,
+          id: key,
+          scope
+        });
+      }
+
+      const expr = _core.types.expressionStatement(_core.types.assignmentExpression("=", methodName, func));
+
+      _core.types.inheritsComments(expr, node);
+
+      classState.body.push(expr);
+      return true;
+    }
+
+    return false;
+  }
+
+  function insertProtoAliasOnce() {
+    if (classState.protoAlias === null) {
+      setState({
+        protoAlias: classState.scope.generateUidIdentifier("proto")
+      });
+
+      const classProto = _core.types.memberExpression(classState.classRef, _core.types.identifier("prototype"));
+
+      const protoDeclaration = _core.types.variableDeclaration("var", [_core.types.variableDeclarator(classState.protoAlias, classProto)]);
+
+      classState.body.push(protoDeclaration);
+    }
+  }
+
+  function pushConstructor(superReturns, method, path) {
+    setState({
+      userConstructorPath: path,
+      userConstructor: method,
+      hasConstructor: true,
+      superReturns
+    });
+    const {
+      construct
+    } = classState;
+
+    _core.types.inheritsComments(construct, method);
+
+    construct.params = method.params;
+
+    _core.types.inherits(construct.body, method.body);
+
+    construct.body.directives = method.body.directives;
+    pushConstructorToBody();
+  }
+
+  function pushConstructorToBody() {
+    if (classState.pushedConstructor) return;
+    classState.pushedConstructor = true;
+
+    if (classState.hasInstanceDescriptors || classState.hasStaticDescriptors) {
+      pushDescriptors();
+    }
+
+    classState.body.push(classState.construct);
+    pushInheritsToBody();
+  }
+
+  function pushInheritsToBody() {
+    if (!classState.isDerived || classState.pushedInherits) return;
+    const superFnId = path.scope.generateUidIdentifier("super");
+    setState({
+      pushedInherits: true,
+      superFnId
+    });
+
+    if (!assumptions.superIsCallableConstructor) {
+      classState.body.unshift(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(superFnId, _core.types.callExpression((0, _inlineCreateSuperHelpers.default)(classState.file), [_core.types.cloneNode(classState.classRef)]))]));
+    }
+
+    classState.body.unshift(_core.types.expressionStatement(_core.types.callExpression(classState.file.addHelper(classState.isLoose ? "inheritsLoose" : "inherits"), [_core.types.cloneNode(classState.classRef), _core.types.cloneNode(classState.superName)])));
+  }
+
+  function extractDynamicKeys() {
+    const {
+      dynamicKeys,
+      node,
+      scope
+    } = classState;
+
+    for (const elem of node.body.body) {
+      if (!_core.types.isClassMethod(elem) || !elem.computed) continue;
+      if (scope.isPure(elem.key, true)) continue;
+      const id = scope.generateUidIdentifierBasedOnNode(elem.key);
+      dynamicKeys.set(id.name, elem.key);
+      elem.key = id;
+    }
+  }
+
+  function setupClosureParamsArgs() {
+    const {
+      superName,
+      dynamicKeys
+    } = classState;
+    const closureParams = [];
+    const closureArgs = [];
+
+    if (classState.isDerived) {
+      let arg = _core.types.cloneNode(superName);
+
+      if (classState.extendsNative) {
+        arg = _core.types.callExpression(classState.file.addHelper("wrapNativeSuper"), [arg]);
+        (0, _helperAnnotateAsPure.default)(arg);
+      }
+
+      const param = classState.scope.generateUidIdentifierBasedOnNode(superName);
+      closureParams.push(param);
+      closureArgs.push(arg);
+      setState({
+        superName: _core.types.cloneNode(param)
+      });
+    }
+
+    for (const [name, value] of dynamicKeys) {
+      closureParams.push(_core.types.identifier(name));
+      closureArgs.push(value);
+    }
+
+    return {
+      closureParams,
+      closureArgs
+    };
+  }
+
+  function classTransformer(path, file, builtinClasses, isLoose) {
+    setState({
+      parent: path.parent,
+      scope: path.scope,
+      node: path.node,
+      path,
+      file,
+      isLoose
+    });
+    setState({
+      classId: classState.node.id,
+      classRef: classState.node.id ? _core.types.identifier(classState.node.id.name) : classState.scope.generateUidIdentifier("class"),
+      superName: classState.node.superClass,
+      isDerived: !!classState.node.superClass,
+      constructorBody: _core.types.blockStatement([])
+    });
+    setState({
+      extendsNative: classState.isDerived && builtinClasses.has(classState.superName.name) && !classState.scope.hasBinding(classState.superName.name, true)
+    });
+    const {
+      classRef,
+      node,
+      constructorBody
+    } = classState;
+    setState({
+      construct: buildConstructor(classRef, constructorBody, node)
+    });
+    extractDynamicKeys();
+    let {
+      body
+    } = classState;
+    const {
+      closureParams,
+      closureArgs
+    } = setupClosureParamsArgs();
+    buildBody();
+
+    if (!assumptions.noClassCalls) {
+      constructorBody.body.unshift(_core.types.expressionStatement(_core.types.callExpression(classState.file.addHelper("classCallCheck"), [_core.types.thisExpression(), _core.types.cloneNode(classState.classRef)])));
+    }
+
+    body = body.concat(classState.staticPropBody.map(fn => fn(_core.types.cloneNode(classState.classRef))));
+    const isStrict = path.isInStrictMode();
+    let constructorOnly = classState.classId && body.length === 1;
+
+    if (constructorOnly && !isStrict) {
+      for (const param of classState.construct.params) {
+        if (!_core.types.isIdentifier(param)) {
+          constructorOnly = false;
+          break;
+        }
+      }
+    }
+
+    const directives = constructorOnly ? body[0].body.directives : [];
+
+    if (!isStrict) {
+      directives.push(_core.types.directive(_core.types.directiveLiteral("use strict")));
+    }
+
+    if (constructorOnly) {
+      return _core.types.toExpression(body[0]);
+    }
+
+    body.push(_core.types.returnStatement(_core.types.cloneNode(classState.classRef)));
+
+    const container = _core.types.arrowFunctionExpression(closureParams, _core.types.blockStatement(body, directives));
+
+    return _core.types.callExpression(container, closureArgs);
+  }
+
+  return classTransformer(path, file, builtinClasses, isLoose);
+}