Add node modules and new code for release (#39)

Co-authored-by: tbarnes94 <tbarnes94@users.noreply.github.com>

node_modules/@babel/helper-member-expression-to-functions/lib/index.js

@@ -0,0 +1,336 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = memberExpressionToFunctions;
+
+var t = _interopRequireWildcard(require("@babel/types"));
+
+function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
+
+function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
+
+class AssignmentMemoiser {
+  constructor() {
+    this._map = new WeakMap();
+  }
+
+  has(key) {
+    return this._map.has(key);
+  }
+
+  get(key) {
+    if (!this.has(key)) return;
+
+    const record = this._map.get(key);
+
+    const {
+      value
+    } = record;
+    record.count--;
+
+    if (record.count === 0) {
+      return t.assignmentExpression("=", value, key);
+    }
+
+    return value;
+  }
+
+  set(key, value, count) {
+    return this._map.set(key, {
+      count,
+      value
+    });
+  }
+
+}
+
+function toNonOptional(path, base) {
+  const {
+    node
+  } = path;
+
+  if (path.isOptionalMemberExpression()) {
+    return t.memberExpression(base, node.property, node.computed);
+  }
+
+  if (path.isOptionalCallExpression()) {
+    const callee = path.get("callee");
+
+    if (path.node.optional && callee.isOptionalMemberExpression()) {
+      const {
+        object
+      } = callee.node;
+      const context = path.scope.maybeGenerateMemoised(object) || object;
+      callee.get("object").replaceWith(t.assignmentExpression("=", context, object));
+      return t.callExpression(t.memberExpression(base, t.identifier("call")), [context, ...node.arguments]);
+    }
+
+    return t.callExpression(base, node.arguments);
+  }
+
+  return path.node;
+}
+
+function isInDetachedTree(path) {
+  while (path) {
+    if (path.isProgram()) break;
+    const {
+      parentPath,
+      container,
+      listKey
+    } = path;
+    const parentNode = parentPath.node;
+
+    if (listKey) {
+      if (container !== parentNode[listKey]) return true;
+    } else {
+      if (container !== parentNode) return true;
+    }
+
+    path = parentPath;
+  }
+
+  return false;
+}
+
+const handle = {
+  memoise() {},
+
+  handle(member) {
+    const {
+      node,
+      parent,
+      parentPath
+    } = member;
+
+    if (member.isOptionalMemberExpression()) {
+      if (isInDetachedTree(member)) return;
+      const endPath = member.find(({
+        node,
+        parent,
+        parentPath
+      }) => {
+        if (parentPath.isOptionalMemberExpression()) {
+          return parent.optional || parent.object !== node;
+        }
+
+        if (parentPath.isOptionalCallExpression()) {
+          return node !== member.node && parent.optional || parent.callee !== node;
+        }
+
+        return true;
+      });
+      const rootParentPath = endPath.parentPath;
+
+      if (rootParentPath.isUpdateExpression({
+        argument: node
+      }) || rootParentPath.isAssignmentExpression({
+        left: node
+      })) {
+        throw member.buildCodeFrameError(`can't handle assignment`);
+      }
+
+      const isDeleteOperation = rootParentPath.isUnaryExpression({
+        operator: "delete"
+      });
+
+      if (isDeleteOperation && endPath.isOptionalMemberExpression() && endPath.get("property").isPrivateName()) {
+        throw member.buildCodeFrameError(`can't delete a private class element`);
+      }
+
+      let startingOptional = member;
+
+      for (;;) {
+        if (startingOptional.isOptionalMemberExpression()) {
+          if (startingOptional.node.optional) break;
+          startingOptional = startingOptional.get("object");
+          continue;
+        } else if (startingOptional.isOptionalCallExpression()) {
+          if (startingOptional.node.optional) break;
+          startingOptional = startingOptional.get("callee");
+          continue;
+        }
+
+        throw new Error(`Internal error: unexpected ${startingOptional.node.type}`);
+      }
+
+      const {
+        scope
+      } = member;
+      const startingProp = startingOptional.isOptionalMemberExpression() ? "object" : "callee";
+      const startingNode = startingOptional.node[startingProp];
+      const baseNeedsMemoised = scope.maybeGenerateMemoised(startingNode);
+      const baseRef = baseNeedsMemoised != null ? baseNeedsMemoised : startingNode;
+      const parentIsOptionalCall = parentPath.isOptionalCallExpression({
+        callee: node
+      });
+      const parentIsCall = parentPath.isCallExpression({
+        callee: node
+      });
+      startingOptional.replaceWith(toNonOptional(startingOptional, baseRef));
+
+      if (parentIsOptionalCall) {
+        if (parent.optional) {
+          parentPath.replaceWith(this.optionalCall(member, parent.arguments));
+        } else {
+          parentPath.replaceWith(this.call(member, parent.arguments));
+        }
+      } else if (parentIsCall) {
+        member.replaceWith(this.boundGet(member));
+      } else {
+        member.replaceWith(this.get(member));
+      }
+
+      let regular = member.node;
+
+      for (let current = member; current !== endPath;) {
+        const {
+          parentPath
+        } = current;
+
+        if (parentPath === endPath && parentIsOptionalCall && parent.optional) {
+          regular = parentPath.node;
+          break;
+        }
+
+        regular = toNonOptional(parentPath, regular);
+        current = parentPath;
+      }
+
+      let context;
+      const endParentPath = endPath.parentPath;
+
+      if (t.isMemberExpression(regular) && endParentPath.isOptionalCallExpression({
+        callee: endPath.node,
+        optional: true
+      })) {
+        const {
+          object
+        } = regular;
+        context = member.scope.maybeGenerateMemoised(object);
+
+        if (context) {
+          regular.object = t.assignmentExpression("=", context, object);
+        }
+      }
+
+      let replacementPath = endPath;
+
+      if (isDeleteOperation) {
+        replacementPath = endParentPath;
+        regular = endParentPath.node;
+      }
+
+      replacementPath.replaceWith(t.conditionalExpression(t.logicalExpression("||", t.binaryExpression("===", baseNeedsMemoised ? t.assignmentExpression("=", t.cloneNode(baseRef), t.cloneNode(startingNode)) : t.cloneNode(baseRef), t.nullLiteral()), t.binaryExpression("===", t.cloneNode(baseRef), scope.buildUndefinedNode())), isDeleteOperation ? t.booleanLiteral(true) : scope.buildUndefinedNode(), regular));
+
+      if (context) {
+        const endParent = endParentPath.node;
+        endParentPath.replaceWith(t.optionalCallExpression(t.optionalMemberExpression(endParent.callee, t.identifier("call"), false, true), [t.cloneNode(context), ...endParent.arguments], false));
+      }
+
+      return;
+    }
+
+    if (parentPath.isUpdateExpression({
+      argument: node
+    })) {
+      if (this.simpleSet) {
+        member.replaceWith(this.simpleSet(member));
+        return;
+      }
+
+      const {
+        operator,
+        prefix
+      } = parent;
+      this.memoise(member, 2);
+      const value = t.binaryExpression(operator[0], t.unaryExpression("+", this.get(member)), t.numericLiteral(1));
+
+      if (prefix) {
+        parentPath.replaceWith(this.set(member, value));
+      } else {
+        const {
+          scope
+        } = member;
+        const ref = scope.generateUidIdentifierBasedOnNode(node);
+        scope.push({
+          id: ref
+        });
+        value.left = t.assignmentExpression("=", t.cloneNode(ref), value.left);
+        parentPath.replaceWith(t.sequenceExpression([this.set(member, value), t.cloneNode(ref)]));
+      }
+
+      return;
+    }
+
+    if (parentPath.isAssignmentExpression({
+      left: node
+    })) {
+      if (this.simpleSet) {
+        member.replaceWith(this.simpleSet(member));
+        return;
+      }
+
+      const {
+        operator,
+        right: value
+      } = parent;
+
+      if (operator === "=") {
+        parentPath.replaceWith(this.set(member, value));
+      } else {
+        const operatorTrunc = operator.slice(0, -1);
+
+        if (t.LOGICAL_OPERATORS.includes(operatorTrunc)) {
+          this.memoise(member, 1);
+          parentPath.replaceWith(t.logicalExpression(operatorTrunc, this.get(member), this.set(member, value)));
+        } else {
+          this.memoise(member, 2);
+          parentPath.replaceWith(this.set(member, t.binaryExpression(operatorTrunc, this.get(member), value)));
+        }
+      }
+
+      return;
+    }
+
+    if (parentPath.isCallExpression({
+      callee: node
+    })) {
+      parentPath.replaceWith(this.call(member, parent.arguments));
+      return;
+    }
+
+    if (parentPath.isOptionalCallExpression({
+      callee: node
+    })) {
+      parentPath.replaceWith(this.optionalCall(member, parent.arguments));
+      return;
+    }
+
+    if (parentPath.isForXStatement({
+      left: node
+    }) || parentPath.isObjectProperty({
+      value: node
+    }) && parentPath.parentPath.isObjectPattern() || parentPath.isAssignmentPattern({
+      left: node
+    }) && parentPath.parentPath.isObjectProperty({
+      value: parent
+    }) && parentPath.parentPath.parentPath.isObjectPattern() || parentPath.isArrayPattern() || parentPath.isAssignmentPattern({
+      left: node
+    }) && parentPath.parentPath.isArrayPattern() || parentPath.isRestElement()) {
+      member.replaceWith(this.destructureSet(member));
+      return;
+    }
+
+    member.replaceWith(this.get(member));
+  }
+
+};
+
+function memberExpressionToFunctions(path, visitor, state) {
+  path.traverse(visitor, Object.assign({}, handle, state, {
+    memoiser: new AssignmentMemoiser()
+  }));
+}