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

{"version":3,"file":"index.js","sources":["../src/util.ts","../src/index.ts"],"sourcesContent":["import type { NodePath } from \"@babel/traverse\";\n\n/**\n * Test if a NodePath will be cast to boolean when evaluated.\n *\n * @example\n * // returns true\n * const nodePathAQDotB = NodePath(\"if (a?.#b) {}\").get(\"test\"); // a?.#b\n * willPathCastToBoolean(nodePathAQDotB)\n * @example\n * // returns false\n * willPathCastToBoolean(NodePath(\"a?.#b\"))\n * @todo Respect transparent expression wrappers\n * @see {@link packages/babel-plugin-proposal-optional-chaining/src/util.js}\n * @param {NodePath} path\n * @returns {boolean}\n */\nexport function willPathCastToBoolean(path: NodePath): boolean {\n  const maybeWrapped = path;\n  const { node, parentPath } = maybeWrapped;\n  if (parentPath.isLogicalExpression()) {\n    const { operator, right } = parentPath.node;\n    if (\n      operator === \"&&\" ||\n      operator === \"||\" ||\n      (operator === \"??\" && node === right)\n    ) {\n      return willPathCastToBoolean(parentPath);\n    }\n  }\n  if (parentPath.isSequenceExpression()) {\n    const { expressions } = parentPath.node;\n    if (expressions[expressions.length - 1] === node) {\n      return willPathCastToBoolean(parentPath);\n    } else {\n      // if it is in the middle of a sequence expression, we don't\n      // care the return value so just cast to boolean for smaller\n      // output\n      return true;\n    }\n  }\n  return (\n    parentPath.isConditional({ test: node }) ||\n    parentPath.isUnaryExpression({ operator: \"!\" }) ||\n    parentPath.isLoop({ test: node })\n  );\n}\n","import type { NodePath, Visitor } from \"@babel/traverse\";\nimport * as t from \"@babel/types\";\nimport { willPathCastToBoolean } from \"./util\";\n\nclass AssignmentMemoiser {\n  private _map: WeakMap<t.Expression, { count: number; value: t.LVal }>;\n  constructor() {\n    this._map = new WeakMap();\n  }\n\n  has(key: t.Expression) {\n    return this._map.has(key);\n  }\n\n  get(key: t.Expression) {\n    if (!this.has(key)) return;\n\n    const record = this._map.get(key);\n    const { value } = record;\n\n    record.count--;\n    if (record.count === 0) {\n      // The `count` access is the outermost function call (hopefully), so it\n      // does the assignment.\n      return t.assignmentExpression(\"=\", value, key);\n    }\n    return value;\n  }\n\n  set(key: t.Expression, value: t.LVal, count: number) {\n    return this._map.set(key, { count, value });\n  }\n}\n\nfunction toNonOptional(\n  path: NodePath<t.Expression>,\n  base: t.Expression,\n): t.Expression {\n  const { node } = path;\n  if (t.isOptionalMemberExpression(node)) {\n    return t.memberExpression(base, node.property, node.computed);\n  }\n\n  if (path.isOptionalCallExpression()) {\n    const callee = path.get(\"callee\");\n    if (path.node.optional && callee.isOptionalMemberExpression()) {\n      const { object } = callee.node;\n      const context = path.scope.maybeGenerateMemoised(object) || object;\n      callee\n        .get(\"object\")\n        .replaceWith(t.assignmentExpression(\"=\", context as t.LVal, object));\n\n      return t.callExpression(t.memberExpression(base, t.identifier(\"call\")), [\n        context,\n        ...path.node.arguments,\n      ]);\n    }\n\n    return t.callExpression(base, path.node.arguments);\n  }\n\n  return path.node;\n}\n\n// Determines if the current path is in a detached tree. This can happen when\n// we are iterating on a path, and replace an ancestor with a new node. Babel\n// doesn't always stop traversing the old node tree, and that can cause\n// inconsistencies.\nfunction isInDetachedTree(path: NodePath) {\n  while (path) {\n    if (path.isProgram()) break;\n\n    const { parentPath, container, listKey } = path;\n    const parentNode = parentPath.node;\n    if (listKey) {\n      if (container !== parentNode[listKey]) return true;\n    } else {\n      if (container !== parentNode) return true;\n    }\n\n    path = parentPath;\n  }\n\n  return false;\n}\n\ntype Member = NodePath<t.OptionalMemberExpression