refactor: remove concat-stream dependency and modernize MemoryStorage #1356
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Replace external concat-stream with a simplified custom implementation without additional deps and convert to ES6 classes
Phillip9587
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Pull Request Overview
This PR removes the concat-stream dependency from production by implementing a custom ConcatStream class and modernizes the memory storage module with ES6 class syntax.
- Eliminates transitive dependencies (
readable-stream,buffer-from,typedarray) from the production bundle - Implements a custom
ConcatStreamclass with enhanced buffer handling within the memory storage module - Modernizes code structure using ES6 classes instead of prototype-based patterns
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| storage/memory.js | Replaces concat-stream with custom implementation and converts to ES6 classes |
| package.json | Moves concat-stream from dependencies to devDependencies |
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| constructor (cb) { | ||
| super() | ||
| this.body = [] | ||
| this.on('finish', function () { |
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The callback is invoked with this.getBody() but this context may not refer to the ConcatStream instance inside the 'finish' event handler. Use an arrow function or bind the context to ensure this refers to the ConcatStream instance.
Suggested change
| this.on('finish', function () { | |
| this.on('finish', () => { |
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This PR eliminates the
concat-streamdependency by implementing a customConcatStreamclass within the memory storage module.Changes
Moved
concat-streamfrom dependencies to dev dependencies, implemented an internalConcatStreamclass with enhanced buffer handling and modernized the code to ES6 class syntax.Benefits
Removes unnecessary transitive dependencies from the production bundle:
readable-streamv3 - mirrors Node.js v10+ native stream implementationbuffer-from- polyfill forBuffer.from()(available since Node.js v5.10)typedarray- TypedArray polyfill (native support since Node.js v0.10)The custom implementation maintains full compatibility with the existing API while reducing the overall dependency footprint.