@nestjs/cli/lib/compiler/compiler.js

Nest - modern, fast, powerful node.js web framework (@cli)

import * as ts from 'typescript';
import { BaseCompiler } from './base-compiler.js';
import { tsconfigPathsBeforeHookFactory } from './hooks/tsconfig-paths.hook.js';
export class Compiler extends BaseCompiler {
    tsConfigProvider;
    typescriptLoader;
    constructor(pluginsLoader, tsConfigProvider, typescriptLoader) {
        super(pluginsLoader);
        this.tsConfigProvider = tsConfigProvider;
        this.typescriptLoader = typescriptLoader;
    }
    run(configuration, tsConfigPath, appName, _extras, onSuccess) {
        const tsBinary = this.typescriptLoader.load();
        const formatHost = {
            getCanonicalFileName: (path) => path,
            getCurrentDirectory: tsBinary.sys.getCurrentDirectory,
            getNewLine: () => tsBinary.sys.newLine,
        };
        const { options, fileNames, projectReferences } = this.tsConfigProvider.getByConfigFilename(tsConfigPath);
        const createProgram = tsBinary.createIncrementalProgram || tsBinary.createProgram;
        const program = createProgram.call(ts, {
            rootNames: fileNames,
            projectReferences,
            options,
        });
        const plugins = this.loadPlugins(configuration, tsConfigPath, appName);
        const tsconfigPathsPlugin = tsconfigPathsBeforeHookFactory(options);
        const programRef = program.getProgram
            ? program.getProgram()
            : program;
        const before = plugins.beforeHooks.map((hook) => hook(programRef));
        const after = plugins.afterHooks.map((hook) => hook(programRef));
        const afterDeclarations = plugins.afterDeclarationsHooks.map((hook) => hook(programRef));
        const emitResult = program.emit(undefined, undefined, undefined, undefined, {
            before: tsconfigPathsPlugin
                ? [tsconfigPathsPlugin, ...before]
                : before,
            after,
            afterDeclarations: tsconfigPathsPlugin
                ? [tsconfigPathsPlugin, ...afterDeclarations]
                : afterDeclarations,
        });
        const errorsCount = this.reportAfterCompilationDiagnostic(program, emitResult, tsBinary, formatHost);
        if (errorsCount) {
            process.exit(1);
        }
        else if (!errorsCount && onSuccess) {
            onSuccess();
        }
    }
    reportAfterCompilationDiagnostic(program, emitResult, tsBinary, formatHost) {
        const diagnostics = tsBinary
            .getPreEmitDiagnostics(program)
            .concat(emitResult.diagnostics);
        if (diagnostics.length > 0) {
            console.error(tsBinary.formatDiagnosticsWithColorAndContext(diagnostics, formatHost));
            console.info(`Found ${diagnostics.length} error(s).` + tsBinary.sys.newLine);
        }
        return diagnostics.length;
    }
}