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rollup-plugin-dts
Advanced tools
The rollup-plugin-dts package is a Rollup plugin that allows you to bundle TypeScript declaration files (.d.ts). It is particularly useful for library authors who want to distribute their TypeScript types along with their JavaScript code.
Bundle TypeScript Declaration Files
This feature allows you to bundle multiple TypeScript declaration files into a single .d.ts file. The code sample demonstrates how to configure Rollup to use the rollup-plugin-dts to bundle TypeScript declaration files from 'src/index.d.ts' to 'dist/index.d.ts'.
import dts from 'rollup-plugin-dts';
export default {
input: 'src/index.d.ts',
output: {
file: 'dist/index.d.ts',
format: 'es'
},
plugins: [dts()]
};
The TypeScript package itself can generate declaration files using the 'declaration' and 'declarationDir' options in the tsconfig.json file. However, it does not bundle them into a single file. This is a more basic approach compared to rollup-plugin-dts, which provides more advanced bundling capabilities.
The dts-bundle package is another tool for bundling TypeScript declaration files. It is similar to rollup-plugin-dts but is not a Rollup plugin. It can be used as a standalone tool or integrated into build scripts. It offers similar functionality but may require more manual setup compared to the seamless integration provided by rollup-plugin-dts.
This is an EXPERIMENT to generate roll-upd .d.ts
definition files from
your .ts
files.
Well, ideally TypeScript should just do that itself, and it also has a proposal to do that. But since ~3 years, it hasn’t happened yet.
There are also some solutions for this already:
Some projects, like rollup itself go the route of completely separating their public interfaces in a separate file.
Well yes it does, even though I am sure there are a lot of things I haven’t covered yet. However, so far it is complete enough to even generate its own definition file
This project abuses the internals implementation of rollup in a quite interesting way. See, rollup uses string manipulation to generate its output file, by changing and removing parts of the input file content. It also does quite extensive dead code elimination by walking the AST of the input code and figuring out which parts it can safely remove from the output bundle.
We can use this knowledge to specifically direct rollup to keep, change and remove parts of our input file.
export default
@internal
or @hidden
FAQs
A rollup plugin that will bundle up your .d.ts definition files.
The npm package rollup-plugin-dts receives a total of 396,891 weekly downloads. As such, rollup-plugin-dts popularity was classified as popular.
We found that rollup-plugin-dts demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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