custom transformer does not run when cache exists

[WanderWang]

What happens and why it is wrong

customTransformer does not works then rpt2_cache folder exists

Environment

Windows10 1903 ,WSL Terminal ( Ubuntu )

Versions

• typescript:3.4.3
• rollup:1.15.6
• rollup-plugin-typescript2:0.21.1

rollup.config.js

  const inputOptions = {
        input: './index.ts',
        external: [

        ],
        plugins: [
            nodeResolve(),
            typescript({
                transformers,
                tsconfigDefaults,
                tsconfig: "tsconfig.json",
                tsconfigOverride: {
                    compilerOptions: {
                        module: 'esnext',
                        declarationDir: "../../../dist/" + packageName + "/dts-temp/"
                    }
                },
                useTsconfigDeclarationDir: true
            }),

        ]
    };
    const outputOptions = {
        file: path.join("../../../dist/", packageName, packageName + ".js"),
        format: "es",

    };

    // create a bundle
    const originCwdDir = process.cwd();
    process.chdir(path.resolve(__dirname, '../packages/', packageName, 'src'))
    const bundle = await rollup.rollup(inputOptions);

tsconfig.json

package.json

plugin output with verbosity 3

[WanderWang]

by the way , set { clean:true } in rollup-plugin-typescript2 can resolve this program

[ezolenko]

Doesn't work how? Could you make a small test repo with reproduction?

[WanderWang]

Steps:

1. Compile with rollup/rollup-plugin-typescript2

2. After compilation, a cache file is generated

3. Modify the compilation script and add transformer

4. Compile without changing any typescript files

5. CustomTransformer will not executed

I think it should be the caching mechanism of rollup itself because transformer has no executed without any changes to typescript source code

[ezolenko]

I see, might be because object-hash doesn't like the way you do transformers. Could you post what your transformers object looks like? Does it have async functions for example?

If possible, run the build with verbosity: 4 and post rpt2: plugin options: part of the output (printed close to the start of output).

Do you add a new transformer to a list of existing transformers or did you add a first transformer when there was none before? (that last part should work)

[ezolenko]

And yeah workaround is to do clean builds

[agilgur5]

Closing this as a duplicate of #228 which has had much more activity and OP there responded to requests for more info, while this has been stale for some time.