Exclude node_modules

Including dependencies in a bundle not only increases capacity, but also increases compilation time.
Serpack provides 'external' option that excludes node_modules from bundle results to resolve this issue.

#In CLI

npx serpack ./index.ts --external

Enable --external flag to exclude node_modules from bundle.

#In JavaScript

#Exclude specific dependencies

compile('src/index.ts', {
  externals: ['lodash', 'axios'],
});

#Exclude ALL node_modules

compile('src/index.ts', {
  nodeExternal: true, // default: false
});

#Force External

The externals works by finding the dependency's package.json through the resolver and excluding it if it matches the name field of package.json.

To skip this process and directly compare the path in import or require statements (e.g., require("my-pkg") => my-pkg) without using the resolver, use the force external option.

compile('src/index.ts', {
  forceExternal: ['my-workspace'],
});

This can contribute to a slight performance improvement.