plugin-hash-content

[frank-dspeed]

am working on a plugin to solve that https://github.com/direktspeed/plugins/tree/plugin-content-hash

@rollup/plugin-content-hash

Example

rollup.config.js

import {createHash} from 'crypto';

const contentHash = (getHash)=>{
    return {
        name: 'content-hash',
        generateBundle: function(options = {}, bundle = {}, isWrite = false) {
            if (!isWrite) {
                return 
            }
            const updateBundle = (key,value) => {
                if (!value.code) {
                    //Maybe add asset support later
                    return;
                }

                const currentHash = getHash(key)
                if (currentHash === value.fileName) {
                    return;
                }
                   
                const newKey = key.replace(currentHash,createHash('sha256').update(value.code).digest('hex').substring(0,10))
                console.log(currentHash,key,newKey)
                
                value.fileName = newKey
                //TODO: if file exists we would throw this out of the bundle! no need to rewrite that file
                bundle[newKey] = value
                delete bundle[key]
                Object.values(bundle).map(currentValue=>{
                    if (currentValue.imports.includes(key)) {
                        currentValue.imports = [...currentValue.imports.filter(x => x !== key),newKey]
                    }
                    if (currentValue.dynamicImports.includes(key)) {
                        currentValue.dynamicImports = [...currentValue.dynamicImports.filter(x => x !== key),newKey]
                    }
                    if (currentValue.implicitlyLoadedBefore.includes(key)) {
                        currentValue.implicitlyLoadedBefore = [...currentValue.implicitlyLoadedBefore.filter(x => x !== key),newKey]
                    }
                    if (currentValue.code.indexOf(key) > -1) {
                        currentValue.code = currentValue.code.split(key).join(newKey)
                        updateBundle(currentValue.fileName,currentValue)
                    }
                })
            }

            for (const [key, value] of Object.entries(bundle)) {
                // only works with none asset chunks assets have source
                updateBundle(key,value)
            }

            console.log(bundle)
        }
    }
}

export default  {
    input: 'main.js',
    output: {
        dir: 'dist',
        chunkFileNames: '[name]-[hash].js',
        format: 'systemjs'
    },
    plugins: [contentHash(fileName=>{
        const split = fileName.split('-');
        const hasHash = split.length > 1

        return hasHash ? split.pop().split('.')[0] : fileName;
    })]
}

it works at present i think this will solve it when it is a bit more designed

[frank-dspeed]

rollup/rollup#2839