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Name	Size	Last Modified	Actions
[F]estree-walker.umd.js Edit	2.75 KB	2022-10-08 17:28:23
[F]estree-walker.umd.js.map	3.04 KB	2022-10-08 17:28:23

Editing: estree-walker.umd.js

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
	typeof define === 'function' && define.amd ? define(['exports'], factory) :
	(factory((global.estreeWalker = {})));
}(this, (function (exports) { 'use strict';

function walk(ast, { enter, leave }) {
		return visit(ast, null, enter, leave);
	}

let should_skip = false;
	let should_remove = false;
	let replacement = null;
	const context = {
		skip: () => should_skip = true,
		remove: () => should_remove = true,
		replace: (node) => replacement = node
	};

function replace(parent, prop, index, node) {
		if (parent) {
			if (index !== null) {
				parent[prop][index] = node;
			} else {
				parent[prop] = node;
			}
		}
	}

function remove(parent, prop, index) {
		if (parent) {
			if (index !== null) {
				parent[prop].splice(index, 1);
			} else {
				delete parent[prop];
			}
		}
	}

function visit(
		node,
		parent,
		enter,
		leave,
		prop,
		index
	) {
		if (node) {
			if (enter) {
				const _should_skip = should_skip;
				const _should_remove = should_remove;
				const _replacement = replacement;
				should_skip = false;
				should_remove = false;
				replacement = null;

enter.call(context, node, parent, prop, index);

if (replacement) {
					node = replacement;
					replace(parent, prop, index, node);
				}

if (should_remove) {
					remove(parent, prop, index);
				}

const skipped = should_skip;
				const removed = should_remove;

should_skip = _should_skip;
				should_remove = _should_remove;
				replacement = _replacement;

if (skipped) return node;
				if (removed) return null;
			}

for (const key in node) {
				const value = (node )[key];

if (typeof value !== 'object') {
					continue;
				}

else if (Array.isArray(value)) {
					for (let j = 0, k = 0; j < value.length; j += 1, k += 1) {
						if (value[j] !== null && typeof value[j].type === 'string') {
							if (!visit(value[j], node, enter, leave, key, k)) {
								// removed
								j--;
							}
						}
					}
				}

else if (value !== null && typeof value.type === 'string') {
					visit(value, node, enter, leave, key, null);
				}
			}

if (leave) {
				const _replacement = replacement;
				const _should_remove = should_remove;
				replacement = null;
				should_remove = false;

leave.call(context, node, parent, prop, index);

if (replacement) {
					node = replacement;
					replace(parent, prop, index, node);
				}

if (should_remove) {
					remove(parent, prop, index);
				}

const removed = should_remove;

replacement = _replacement;
				should_remove = _should_remove;

if (removed) return null;
			}
		}

return node;
	}

exports.walk = walk;

Object.defineProperty(exports, '__esModule', { value: true });

})));

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