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							202 lines
						
					
					
						
							4.5 KiB
						
					
					
				
			
		
		
	
	
							202 lines
						
					
					
						
							4.5 KiB
						
					
					
				| "use strict";
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| 
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| Object.defineProperty(exports, "__esModule", {
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|   value: true
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| });
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| exports.default = _default;
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| 
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| var _template = require("@babel/template");
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| 
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| var _t = require("@babel/types");
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| 
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| const {
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|   NOT_LOCAL_BINDING,
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|   cloneNode,
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|   identifier,
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|   isAssignmentExpression,
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|   isAssignmentPattern,
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|   isFunction,
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|   isIdentifier,
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|   isLiteral,
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|   isNullLiteral,
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|   isObjectMethod,
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|   isObjectProperty,
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|   isRegExpLiteral,
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|   isRestElement,
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|   isTemplateLiteral,
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|   isVariableDeclarator,
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|   toBindingIdentifierName
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| } = _t;
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| 
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| function getFunctionArity(node) {
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|   const count = node.params.findIndex(param => isAssignmentPattern(param) || isRestElement(param));
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|   return count === -1 ? node.params.length : count;
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| }
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| 
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| const buildPropertyMethodAssignmentWrapper = _template.default.statement(`
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|   (function (FUNCTION_KEY) {
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|     function FUNCTION_ID() {
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|       return FUNCTION_KEY.apply(this, arguments);
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|     }
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| 
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|     FUNCTION_ID.toString = function () {
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|       return FUNCTION_KEY.toString();
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|     }
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| 
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|     return FUNCTION_ID;
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|   })(FUNCTION)
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| `);
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| 
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| const buildGeneratorPropertyMethodAssignmentWrapper = _template.default.statement(`
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|   (function (FUNCTION_KEY) {
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|     function* FUNCTION_ID() {
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|       return yield* FUNCTION_KEY.apply(this, arguments);
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|     }
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| 
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|     FUNCTION_ID.toString = function () {
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|       return FUNCTION_KEY.toString();
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|     };
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| 
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|     return FUNCTION_ID;
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|   })(FUNCTION)
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| `);
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| 
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| const visitor = {
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|   "ReferencedIdentifier|BindingIdentifier"(path, state) {
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|     if (path.node.name !== state.name) return;
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|     const localDeclar = path.scope.getBindingIdentifier(state.name);
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|     if (localDeclar !== state.outerDeclar) return;
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|     state.selfReference = true;
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|     path.stop();
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|   }
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| 
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| };
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| 
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| function getNameFromLiteralId(id) {
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|   if (isNullLiteral(id)) {
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|     return "null";
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|   }
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| 
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|   if (isRegExpLiteral(id)) {
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|     return `_${id.pattern}_${id.flags}`;
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|   }
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| 
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|   if (isTemplateLiteral(id)) {
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|     return id.quasis.map(quasi => quasi.value.raw).join("");
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|   }
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| 
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|   if (id.value !== undefined) {
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|     return id.value + "";
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|   }
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| 
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|   return "";
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| }
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| 
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| function wrap(state, method, id, scope) {
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|   if (state.selfReference) {
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|     if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) {
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|       scope.rename(id.name);
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|     } else {
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|       if (!isFunction(method)) return;
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|       let build = buildPropertyMethodAssignmentWrapper;
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| 
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|       if (method.generator) {
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|         build = buildGeneratorPropertyMethodAssignmentWrapper;
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|       }
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| 
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|       const template = build({
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|         FUNCTION: method,
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|         FUNCTION_ID: id,
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|         FUNCTION_KEY: scope.generateUidIdentifier(id.name)
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|       }).expression;
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|       const params = template.callee.body.body[0].params;
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| 
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|       for (let i = 0, len = getFunctionArity(method); i < len; i++) {
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|         params.push(scope.generateUidIdentifier("x"));
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|       }
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| 
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|       return template;
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|     }
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|   }
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| 
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|   method.id = id;
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|   scope.getProgramParent().references[id.name] = true;
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| }
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| 
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| function visit(node, name, scope) {
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|   const state = {
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|     selfAssignment: false,
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|     selfReference: false,
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|     outerDeclar: scope.getBindingIdentifier(name),
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|     name: name
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|   };
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|   const binding = scope.getOwnBinding(name);
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| 
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|   if (binding) {
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|     if (binding.kind === "param") {
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|       state.selfReference = true;
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|     } else {}
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|   } else if (state.outerDeclar || scope.hasGlobal(name)) {
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|     scope.traverse(node, visitor, state);
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|   }
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| 
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|   return state;
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| }
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| 
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| function _default({
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|   node,
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|   parent,
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|   scope,
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|   id
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| }, localBinding = false, supportUnicodeId = false) {
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|   if (node.id) return;
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| 
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|   if ((isObjectProperty(parent) || isObjectMethod(parent, {
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|     kind: "method"
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|   })) && (!parent.computed || isLiteral(parent.key))) {
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|     id = parent.key;
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|   } else if (isVariableDeclarator(parent)) {
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|     id = parent.id;
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| 
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|     if (isIdentifier(id) && !localBinding) {
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|       const binding = scope.parent.getBinding(id.name);
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| 
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|       if (binding && binding.constant && scope.getBinding(id.name) === binding) {
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|         node.id = cloneNode(id);
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|         node.id[NOT_LOCAL_BINDING] = true;
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|         return;
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|       }
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|     }
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|   } else if (isAssignmentExpression(parent, {
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|     operator: "="
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|   })) {
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|     id = parent.left;
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|   } else if (!id) {
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|     return;
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|   }
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| 
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|   let name;
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| 
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|   if (id && isLiteral(id)) {
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|     name = getNameFromLiteralId(id);
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|   } else if (id && isIdentifier(id)) {
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|     name = id.name;
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|   }
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| 
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|   if (name === undefined) {
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|     return;
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|   }
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| 
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|   if (!supportUnicodeId && isFunction(node) && /[\uD800-\uDFFF]/.test(name)) {
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|     return;
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|   }
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| 
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|   name = toBindingIdentifierName(name);
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|   const newId = identifier(name);
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|   newId[NOT_LOCAL_BINDING] = true;
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|   const state = visit(node, name, scope);
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|   return wrap(state, node, newId, scope) || node;
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| }
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| 
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| //# sourceMappingURL=index.js.map
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