boolean
true
Whether to automatically set the file extension based on the format
option in the JavaScript output files.
By default that when autoExtension
is set to true
, the file extension will be:
.js
with esm
format and .cjs
with cjs
format when type: module
in package.json
.
.js
with cjs
format and .mjs
with esm
format when type: commonjs
or no type
field in package.json
.
When bundle is set to false
that as known as bundleless mode, you should write full path instead of ignoring directory indexes (e.g. using './foo'
as a shorthand for './foo/index.js'
) in source code.
For example, if foo
is a folder, you need to rewrite import * from './foo'
to import * from './foo/index'
.
When autoExtension
is set to false
, the file extension will be default to .js
.
You can set autoExtension
to false
and use output.filename to customize the JavaScript output files.