error "Could not resolve entry (<module>)" when using manualChunks

[reinaldoarrosi]

Given a simple application that uses react, when using

manualChunks: {
    'vendor': ['react']
}

Rollup gives "Could not resolve entry (react)".

This is also reported (including sample code reproducing the issue) here #2084 (comment)

[guybedford]

Did you ensure that the path to react is configured? Ie can you correctly build ‘input: “react”’? You may need to include the Node resolver plugin.

…

On Wed, 06 Jun 2018 at 22:35, Reinaldo Arrosi ***@***.***> wrote: Given a simple application that uses react, when using manualChunks: { 'vendor': ['react'] } Rollup gives "Could not resolve entry (react)". This is also reported (including sample code reproducing the issue) here #2084 (comment) <#2084 (comment)> — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#2248>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAkiyjqpS3yWMqvOjm8xZi0KMyKx4-mOks5t6D0YgaJpZM4UdUx6> .

[reinaldoarrosi]

I'm already using rollup-plugin-node-resolve.

In fact, if I simply remove the manualChunks option, my project builds fine and the correct chunks are generated (see example rollup.config.js below).

import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import babel from 'rollup-plugin-babel';

export default [
    {
        experimentalCodeSplitting: true,
        input: [
            './index.jsx', 
            './page1.jsx'
        ],
        output: {
            dir: './dist',
            format: 'system'
        },
        // manualChunks: {
        //     'vendor': ['react']
        // },
        plugins: [
            resolve({ extensions: ['.jsx', '.js'] }),
            commonjs(),
            babel({ exclude: 'node_modules/**' })
        ]
    }
];

Also, the same error occurs when using the following rollup.config.js (Using 'react' as 'input' as you suggested for testing):

import resolve from 'rollup-plugin-node-resolve';
import commonjs from 'rollup-plugin-commonjs';
import babel from 'rollup-plugin-babel';

export default [
    {
        input: 'react',
        output: {
            file: './dist/bundle.js',
            format: 'system',
        },
        plugins: [
            resolve(),
            commonjs(),
            babel({ exclude: 'node_modules/**' })
        ]
    }
];

[guybedford]

Ah, this might be a bug in rollup-plugin-node-resolve if it's not supporting the input: 'react' case...

[reinaldoarrosi]

Should I open the issue there?

[guybedford]

It seems like that would be the place for it, yes.