budgie-cli/lib/converters/typescript/typescriptConverter.js

Node CLI for Budgie.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
const os_1 = require("os");
const ts_budgie_1 = require("ts-budgie");
const ts = require("typescript");
const extensions_1 = require("../../utils/extensions");
const values_1 = require("../../utils/values");
const budgieConverter_1 = require("../budgieConverter");
const converter_1 = require("../converter");
/**
 * Extension for TypeScript files.
 */
exports.tsExtension = ".ts";
/**
 * Creates TS source files for each file name.
 *
 * @param existingFileContents   Writable cache of contents of file paths, keyed by unique file name.
 * @param scriptTarget   Specified TypeScript language output target.
 * @returns TypeScript source files, keyed by unique file path.
 */
const createSourceFilesMap = (existingFileContents, scriptTarget) => {
    const map = new Map();
    existingFileContents.forEach((fileContents, fileName) => {
        map.set(fileName, ts.createSourceFile(fileName, fileContents, scriptTarget, true, ts.ScriptKind.TS));
    });
    return map;
};
/**
 * @todo Use this once ts-budgie supports emitting a summary of unsupported syntax.
 */
exports.complainForTransformation = (sourceFile, complaint) => {
    const { text } = sourceFile;
    const { start } = complaint.range;
    const line = text.substring(0, start).split(/\r\n|\r|\n/g).length;
    return `Line ${line + 1}: Unsupported syntax: ${complaint.line.args[0]}`;
};
/**
 * Converts TypeScript files to their Budgie outputs.
 */
class TypeScriptConverter {
    /**
     * Initializes a new instance of the TypeScriptConverter class.
     *
     * @param dependencies   Dependencies used for initialization.
     * @param options   Options for converting files.
     */
    constructor(dependencies) {
        this.dependencies = dependencies;
        this.sourceFiles = createSourceFilesMap(dependencies.existingFileContents, values_1.defaultValue(dependencies.tsconfigOptions.compilerOptions.target, () => ts.ScriptTarget.Latest));
        this.transformer = ts_budgie_1.createTransformer({
            baseDirectory: dependencies.baseDirectory,
            outputNamespace: dependencies.outputNamespace,
            sourceFiles: Array.from(this.sourceFiles.values()),
        });
    }
    /**
     * Converts a TypeScript file to its Budgie output.
     *
     * @param sourcePath   Original Budgie file path.
     * @returns The file's Budgie output.
     */
    convertFile(sourcePath) {
        return __awaiter(this, void 0, void 0, function* () {
            if (this.dependencies.metadata !== undefined && sourcePath === "src/index.ts") {
                return {
                    sourcePath,
                    status: converter_1.ConversionStatus.Succeeded,
                };
            }
            const sourceFile = this.sourceFiles.get(sourcePath);
            if (sourceFile === undefined) {
                throw new Error(`Unknown source file: '${sourcePath}'.`);
            }
            const outputPath = extensions_1.replaceFileExtension(sourcePath, exports.tsExtension, budgieConverter_1.budgieExtension);
            let transformationResults;
            try {
                transformationResults = this.transformer.transformSourceFile(sourceFile);
            }
            catch (error) {
                return {
                    error,
                    outputPath,
                    sourcePath,
                    status: converter_1.ConversionStatus.Failed,
                };
            }
            yield this.dependencies.fileSystem.writeFile(outputPath, transformationResults.printed.join(os_1.EOL));
            return {
                outputPath,
                sourcePath,
                status: converter_1.ConversionStatus.Succeeded,
            };
        });
    }
}
exports.TypeScriptConverter = TypeScriptConverter;
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