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- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = cloneNode;
-
- var _definitions = require("../definitions");
-
- var _generated = require("../validators/generated");
-
- const has = Function.call.bind(Object.prototype.hasOwnProperty);
-
- function cloneIfNode(obj, deep, withoutLoc) {
- if (obj && typeof obj.type === "string") {
- return cloneNode(obj, deep, withoutLoc);
- }
-
- return obj;
- }
-
- function cloneIfNodeOrArray(obj, deep, withoutLoc) {
- if (Array.isArray(obj)) {
- return obj.map(node => cloneIfNode(node, deep, withoutLoc));
- }
-
- return cloneIfNode(obj, deep, withoutLoc);
- }
-
- function cloneNode(node, deep = true, withoutLoc = false) {
- if (!node) return node;
- const {
- type
- } = node;
- const newNode = {
- type: node.type
- };
-
- if ((0, _generated.isIdentifier)(node)) {
- newNode.name = node.name;
-
- if (has(node, "optional") && typeof node.optional === "boolean") {
- newNode.optional = node.optional;
- }
-
- if (has(node, "typeAnnotation")) {
- newNode.typeAnnotation = deep ? cloneIfNodeOrArray(node.typeAnnotation, true, withoutLoc) : node.typeAnnotation;
- }
- } else if (!has(_definitions.NODE_FIELDS, type)) {
- throw new Error(`Unknown node type: "${type}"`);
- } else {
- for (const field of Object.keys(_definitions.NODE_FIELDS[type])) {
- if (has(node, field)) {
- if (deep) {
- newNode[field] = (0, _generated.isFile)(node) && field === "comments" ? maybeCloneComments(node.comments, deep, withoutLoc) : cloneIfNodeOrArray(node[field], true, withoutLoc);
- } else {
- newNode[field] = node[field];
- }
- }
- }
- }
-
- if (has(node, "loc")) {
- if (withoutLoc) {
- newNode.loc = null;
- } else {
- newNode.loc = node.loc;
- }
- }
-
- if (has(node, "leadingComments")) {
- newNode.leadingComments = maybeCloneComments(node.leadingComments, deep, withoutLoc);
- }
-
- if (has(node, "innerComments")) {
- newNode.innerComments = maybeCloneComments(node.innerComments, deep, withoutLoc);
- }
-
- if (has(node, "trailingComments")) {
- newNode.trailingComments = maybeCloneComments(node.trailingComments, deep, withoutLoc);
- }
-
- if (has(node, "extra")) {
- newNode.extra = Object.assign({}, node.extra);
- }
-
- return newNode;
- }
-
- function maybeCloneComments(comments, deep, withoutLoc) {
- if (!comments || !deep) {
- return comments;
- }
-
- return comments.map(({
- type,
- value,
- loc
- }) => {
- if (withoutLoc) {
- return {
- type,
- value,
- loc: null
- };
- }
-
- return {
- type,
- value,
- loc
- };
- });
- }
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