refakts/dist/refactor-engine.js

TypeScript refactoring tool built for AI coding agents to perform precise refactoring operations via command line instead of requiring complete code regeneration.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.RefactorEngine = void 0;
const ts_morph_1 = require("ts-morph");
const path = __importStar(require("path"));
const tsquery_handler_1 = require("./tsquery-handler");
const variable_declaration_finder_1 = require("./variable-declaration-finder");
const expression_analyzer_1 = require("./expression-analyzer");
const variable_replacer_1 = require("./variable-replacer");
const variable_scope_1 = require("./variable-scope");
const rename_variable_transformation_1 = require("./transformations/rename-variable-transformation");
const variable_locator_1 = require("./locators/variable-locator");
class RefactorEngine {
    constructor() {
        this.tsQueryHandler = new tsquery_handler_1.TSQueryHandler();
        this.declarationFinder = new variable_declaration_finder_1.VariableDeclarationFinder();
        this.expressionAnalyzer = new expression_analyzer_1.ExpressionAnalyzer();
        this.variableReplacer = new variable_replacer_1.VariableReplacer();
        this.variableScope = new variable_scope_1.VariableScope();
        this.project = new ts_morph_1.Project();
        this.variableLocator = new variable_locator_1.VariableLocator(this.project);
    }
    async inlineVariableByQuery(filePath, query) {
        const sourceFile = this.loadSourceFile(filePath);
        const node = this.tsQueryHandler.findNodeByQuery(sourceFile, query);
        await this.performInlineVariable(node);
        await sourceFile.save();
    }
    async renameByQuery(filePath, query, newName) {
        const sourceFile = this.loadSourceFile(filePath);
        const node = this.tsQueryHandler.findNodeByQuery(sourceFile, query);
        await this.performRename(node, newName);
        await sourceFile.save();
    }
    async performInlineVariable(node) {
        this.validateIdentifierNode(node);
        const variableName = node.getText();
        const sourceFile = node.getSourceFile();
        const declaration = this.declarationFinder.findVariableDeclaration(sourceFile, variableName);
        const initializerText = this.getInitializerText(declaration, variableName);
        this.variableReplacer.replaceAllReferences(sourceFile, variableName, declaration, initializerText);
        this.variableReplacer.removeDeclaration(declaration);
    }
    async performRename(node, newName) {
        this.validateIdentifierNode(node);
        const sourceFile = node.getSourceFile();
        const targetPosition = sourceFile.getLineAndColumnAtPos(node.getStart());
        const nodeResult = this.variableLocator.findVariableNodesByPositionSync(sourceFile, targetPosition.line, targetPosition.column);
        const transformation = new rename_variable_transformation_1.RenameVariableTransformation(nodeResult.declaration, nodeResult.usages.map(u => u.node), newName);
        await transformation.transform(sourceFile);
    }
    loadSourceFile(filePath) {
        const absolutePath = path.resolve(filePath);
        return this.project.addSourceFileAtPath(absolutePath);
    }
    validateIdentifierNode(node) {
        if (node.getKind() !== 80) {
            throw new Error(`Expected identifier, got ${node.getKindName()}`);
        }
    }
    getInitializerText(declaration, variableName, context) {
        const nameNode = declaration.getNameNode();
        if (ts_morph_1.Node.isObjectBindingPattern(nameNode) && variableName) {
            return this.getDestructuringInitializer(declaration, variableName);
        }
        return this.getRegularInitializer(declaration, context);
    }
    getDestructuringInitializer(declaration, variableName) {
        const initializer = declaration.getInitializer();
        if (!initializer) {
            throw new Error('Destructuring declaration has no initializer to inline');
        }
        const initializerText = initializer.getText();
        return `${initializerText}.${variableName}`;
    }
    getRegularInitializer(declaration, context) {
        const initializer = declaration.getInitializer();
        if (!initializer) {
            throw new Error('Variable has no initializer to inline');
        }
        return this.expressionAnalyzer.formatWithParentheses(initializer, context);
    }
}
exports.RefactorEngine = RefactorEngine;
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