Upgrading eventemitter3 from 4.x to 5.x
Comparison of the public API of eventemitter3 4.0.7 and 5.0.4, computed automatically from their TypeScript types. A changed signature is a candidate for a breaking change, not a certainty.
Summary
| Removed import paths | 0 |
|---|---|
| Removed exports | 9 |
| Changed signatures | 1 |
| Removed class or interface members | 0 |
| Changed class or interface members | 0 |
| Newly deprecated | 0 |
| Requirement changes (engines, peer dependencies) | 0 |
| New exports | 1 |
Removed exports
| import | export | kind | Before |
|---|---|---|---|
eventemitter3 | prefixed | variable | string | boolean |
eventemitter3 | EventArgs | type | EventListener<T, K> extends (...args: infer P) => any ? P : never |
eventemitter3 | prototype | variable | any |
eventemitter3 | EventNames | type | T extends string | symbol ? T : keyof T |
eventemitter3 | ListenerFn | interface | interface |
eventemitter3 | ArgumentMap | type | { [K in keyof T]: T[K] extends (...args: any[]) => void ? Parameters<T[K]> : T[K] extends any[] ? T[K] : any[]; } |
eventemitter3 | EventListener | type | T extends string | symbol ? (...args: any[]) => void : (...args: ArgumentMap<Exclude<T, string | symbol>>[Extract<K, keyof T>]) => void |
eventemitter3 | ValidEventTypes | type | string | symbol | object |
eventemitter3 | EventEmitterStatic | interface | interface |
Changed signatures
| export | Before | After |
|---|---|---|
eventemitter3 · EventEmitter | EventEmitterStatic | class |
Removed class or interface members
None detected.
Changed class or interface members
None detected.
Newly deprecated
None detected.
Requirement changes (engines, peer dependencies)
None detected.
New exports (1)
| import | export | kind |
|---|---|---|
eventemitter3 | default | class |
Give your AI agent these facts
Vigia is a free MCP server: your coding agent checks versions, breaking changes and vulnerabilities before it writes code. No signup, no API key.
claude mcp add --transport http vigia https://vigia.coredls.cloud/mcp
Add to CursorAdd to VS Code★ Star on GitHub
Any other MCP client
{ "mcpServers": { "vigia": { "url": "https://vigia.coredls.cloud/mcp" } } }Agent skill (SKILL.md): tells the agent when to use Vigia · GitHub Action for pull requests
Frequently asked questions
What are the breaking changes when upgrading eventemitter3 from 4 to 5?
Between eventemitter3 4.0.7 and 5.0.4, Vigia found 9 removed exports, 1 changed signatures and 0 removed or changed class or interface members.
What became deprecated in eventemitter3 5?
0 exports or members are newly marked as deprecated in eventemitter3 5.0.4.
For agents
GET https://vigia.coredls.cloud/v1/packages/npm/eventemitter3/upgrade?from=4.0.7&to=5.0.4