如何将转换器传递给ts-node？

Question

由于我需要使用转换器，所以我正在尝试使用自己的Typescript编译器。

我们使用ts-node来运行一些文件(单独的测试等)我还需要将转换器传递给ts-node编译器。

这是我的代码

const ts = require('typescript');
const tsNode = require('ts-node').register;
const keysTransformer = require( 'ts-transformer-keys/transformer');
const tsConfig = require( './tsconfig.json');

const compileProject = () => {
    const { options, fileNames } = ts.parseJsonConfigFileContent(
        tsConfig,
        ts.sys,
        __dirname
    );
    const program = ts.createProgram(fileNames, options);

    const transformers = {
        before: [keysTransformer(program)],
        after: []
    };

    program.emit(undefined, undefined, undefined, false, transformers);
}

const compileAndRun = (files) => {
    tsNode({ files, compilerOptions: tsConfig.compilerOptions, transformers: ["ts-transformer-keys/transformer"] });
    files.forEach(file => {
        require(file);
    });
}

module.export = main = (args) => {
    if(args.length >= 2) {
        const fileNames = args.splice(2);
        compileAndRun(fileNames);
    } else {
        compileProject();
    }
}

main(process.argv);

将转换器传递给TypeScript编译器(在编译整个项目时)可以很好地工作，方法是这样做

const transformers = {
    before: [keysTransformer(program)],
    after: []
};

但是，我找不到足够的文档来说明如何对ts-node执行相同的操作。

Answer 1

register()的transformers选项是CustomTransformers类型(传递时不是数组)：

    interface CustomTransformers {
        /** Custom transformers to evaluate before built-in .js transformations. */
        before?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
        /** Custom transformers to evaluate after built-in .js transformations. */
        after?: (TransformerFactory<SourceFile> | CustomTransformerFactory)[];
        /** Custom transformers to evaluate after built-in .d.ts transformations. */
        afterDeclarations?: (TransformerFactory<Bundle | SourceFile> | CustomTransformerFactory)[];
    }