chunks-tracker

a small library to track chunks the rollup generates

Why?

you could this prevent rollup from creating new files for chunks and filling you build directory

Usage

import chunksTracker from "chunks-tracker";

export default {
  input: "index.js",
  output: {
    // ...
    chunkFileNames: chunksTracker({ ...yourOptions }),
    // if you to prevent rollup from creating new files for chunks and filling you build directory
    chunkFileNames: chunksTracker({
      dir: "<your-build-folder>",
      storeIn: "chunks.json",
      preventRepeat: true,
    }),
  },
};

Options

all options are optional

dir

default: undefined

the path to your build directory relative to the current working directory (cwd)

format

default: undefined

the format for your build files

schema

default: "[name]-[hash].js"

the schema for your chunks names for example: if your schema is the default chunksTracker will replace "[name]" with the file name and replace "[hash]" with random letters and numbers

[name]: the file name [hash]: some random letters and numbers [format]: the format for the file (eg. cjs) you need to pass format

storeIn

default: false

a path to a json file relative to the build folder

the json file will be an object where

• the keys are the path of the source files of the chunks relative to cwd
• the values are the path of the chunks relative to the build folder

for example:

if dynamically you import a file called (for example) "my-file.js" in cwd the json file will look like this:

{ "my-file.js": "my-file-2a8e18e.js" }

preventRepeat

default: false

need storeIn to be specified

a boolean if true will prevent rollup from creating new files for the same source files

for example:

if you're in watch mode

and you dynamically import a file called "my-file.js"

in the first run chunks-tracker will store it's source file path and it's generated chunks path (as shown in storeIn) and return generated chunks path to rollup

if you then update it

chunks-tracker will read the json file and return generated chunks path to rollup so rollup will update that file instead of creating a new one

hashLen

default: 20

the length of the hash(s) in generated chunks