docs：更新文档

node_modules/estree-walker/dist/estree-walker.umd.js

@@ -0,0 +1,253 @@
+(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';
+
+	class WalkerBase {constructor() { WalkerBase.prototype.__init.call(this);WalkerBase.prototype.__init2.call(this);WalkerBase.prototype.__init3.call(this);WalkerBase.prototype.__init4.call(this); }
+		 __init() {this.should_skip = false;}
+		 __init2() {this.should_remove = false;}
+		 __init3() {this.replacement = null;}
+
+		 __init4() {this.context = {
+			skip: () => (this.should_skip = true),
+			remove: () => (this.should_remove = true),
+			replace: (node) => (this.replacement = node)
+		};}
+
+		 replace(parent, prop, index, node) {
+			if (parent) {
+				if (index !== null) {
+					parent[prop][index] = node;
+				} else {
+					parent[prop] = node;
+				}
+			}
+		}
+
+		 remove(parent, prop, index) {
+			if (parent) {
+				if (index !== null) {
+					parent[prop].splice(index, 1);
+				} else {
+					delete parent[prop];
+				}
+			}
+		}
+	}
+
+	class SyncWalkerClass extends WalkerBase {
+		
+		
+
+		constructor(walker) {
+			super();
+			this.enter = walker.enter;
+			this.leave = walker.leave;
+		}
+
+		 visit(
+			node,
+			parent,
+			enter,
+			leave,
+			prop,
+			index
+		) {
+			if (node) {
+				if (enter) {
+					const _should_skip = this.should_skip;
+					const _should_remove = this.should_remove;
+					const _replacement = this.replacement;
+					this.should_skip = false;
+					this.should_remove = false;
+					this.replacement = null;
+
+					enter.call(this.context, node, parent, prop, index);
+
+					if (this.replacement) {
+						node = this.replacement;
+						this.replace(parent, prop, index, node);
+					}
+
+					if (this.should_remove) {
+						this.remove(parent, prop, index);
+					}
+
+					const skipped = this.should_skip;
+					const removed = this.should_remove;
+
+					this.should_skip = _should_skip;
+					this.should_remove = _should_remove;
+					this.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 i = 0; i < value.length; i += 1) {
+							if (value[i] !== null && typeof value[i].type === 'string') {
+								if (!this.visit(value[i], node, enter, leave, key, i)) {
+									// removed
+									i--;
+								}
+							}
+						}
+					} else if (value !== null && typeof value.type === "string") {
+						this.visit(value, node, enter, leave, key, null);
+					}
+				}
+
+				if (leave) {
+					const _replacement = this.replacement;
+					const _should_remove = this.should_remove;
+					this.replacement = null;
+					this.should_remove = false;
+
+					leave.call(this.context, node, parent, prop, index);
+
+					if (this.replacement) {
+						node = this.replacement;
+						this.replace(parent, prop, index, node);
+					}
+
+					if (this.should_remove) {
+						this.remove(parent, prop, index);
+					}
+
+					const removed = this.should_remove;
+
+					this.replacement = _replacement;
+					this.should_remove = _should_remove;
+
+					if (removed) return null;
+				}
+			}
+
+			return node;
+		}
+	}
+
+	class AsyncWalkerClass extends WalkerBase {
+		
+		
+
+		constructor(walker) {
+			super();
+			this.enter = walker.enter;
+			this.leave = walker.leave;
+		}
+
+		 async visit(
+			node,
+			parent,
+			enter,
+			leave,
+			prop,
+			index
+		) {
+			if (node) {
+				if (enter) {
+					const _should_skip = this.should_skip;
+					const _should_remove = this.should_remove;
+					const _replacement = this.replacement;
+					this.should_skip = false;
+					this.should_remove = false;
+					this.replacement = null;
+
+					await enter.call(this.context, node, parent, prop, index);
+
+					if (this.replacement) {
+						node = this.replacement;
+						this.replace(parent, prop, index, node);
+					}
+
+					if (this.should_remove) {
+						this.remove(parent, prop, index);
+					}
+
+					const skipped = this.should_skip;
+					const removed = this.should_remove;
+
+					this.should_skip = _should_skip;
+					this.should_remove = _should_remove;
+					this.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 i = 0; i < value.length; i += 1) {
+							if (value[i] !== null && typeof value[i].type === 'string') {
+								if (!(await this.visit(value[i], node, enter, leave, key, i))) {
+									// removed
+									i--;
+								}
+							}
+						}
+					} else if (value !== null && typeof value.type === "string") {
+						await this.visit(value, node, enter, leave, key, null);
+					}
+				}
+
+				if (leave) {
+					const _replacement = this.replacement;
+					const _should_remove = this.should_remove;
+					this.replacement = null;
+					this.should_remove = false;
+
+					await leave.call(this.context, node, parent, prop, index);
+
+					if (this.replacement) {
+						node = this.replacement;
+						this.replace(parent, prop, index, node);
+					}
+
+					if (this.should_remove) {
+						this.remove(parent, prop, index);
+					}
+
+					const removed = this.should_remove;
+
+					this.replacement = _replacement;
+					this.should_remove = _should_remove;
+
+					if (removed) return null;
+				}
+			}
+
+			return node;
+		}
+	}
+
+	function walk(ast, walker) {
+		const instance = new SyncWalkerClass(walker);
+		return instance.visit(ast, null, walker.enter, walker.leave);
+	}
+
+	async function asyncWalk(
+		ast,
+		walker
+	) {
+		const instance = new AsyncWalkerClass(walker);
+		return await instance.visit(ast, null, walker.enter, walker.leave);
+	}
+
+	exports.walk = walk;
+	exports.asyncWalk = asyncWalk;
+
+	Object.defineProperty(exports, '__esModule', { value: true });
+
+})));