Subscribing/unsubscribing for a lot of different event types could leadto a memory leak.Seesindresorhus/component-emitter@aa2e57aDiff:sindresorhus/component-emitter@1.2.1...1.3.0

It seems there is something wrong with newer versions (the CI seemsstuck). Let's pin the version for now.

Diff:3.3.0...3.3.1

When maxHttpBufferSize is large (1e8 bytes), a payload of length 100MBcan be sent like so:99999991:422222222222222222222222222222222222222222222...This massive packet can cause OOM via building up many many`ConsOneByteString` objects due to concatenation:99999989 `ConsOneByteString`s and then converting the massive integer toa `Number`.The performance can be improved to avoid this by using `substring`rather than building the string via concatenation.Below I tried one payload of length 7e7 as the 1e8 payload took solong to process that it timed out before running out of memory.```==== JS stack trace =========================================    0: ExitFrame [pc: 0x13c5b79]Security context: 0x152fe7b808d1 <JSObject>    1: decodeString [0x2dd385fb5d1] [/node_modules/socket.io-parser/index.js:~276] [pc=0xf59746881be](this=0x175d34c42b69 <JSGlobal Object>,0x14eccff10fe1 <Very long string[69999990]>)    2: add [0x31fc2693da29] [/node_modules/socket.io-parser/index.js:242] [bytecode=0xa7ed6554889 offset=11](this=0x0a2881be5069 <Decoder map = 0x3ceaa8bf48c9>,0x14eccff10fe1 <Very...FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory 1: 0xa09830 node::Abort() [node] 2: 0xa09c55 node::OnFatalError(char const*, char const*) [node] 3: 0xb7d71e v8::Utils::ReportOOMFailure(v8::internal::Isolate*, char const*, bool) [node] 4: 0xb7da99 v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char const*, bool) [node] 5: 0xd2a1f5  [node] 6: 0xd2a886 v8::internal::Heap::RecomputeLimits(v8::internal::GarbageCollector) [node] 7: 0xd37105 v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector, v8::GCCallbackFlags) [node] 8: 0xd37fb5 v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace, v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node] 9: 0xd3965f v8::internal::Heap::HandleGCRequest() [node]10: 0xce8395 v8::internal::StackGuard::HandleInterrupts() [node]11: 0x1042cb6 v8::internal::Runtime_StackGuard(int, unsigned long*, v8::internal::Isolate*) [node]12: 0x13c5b79  [node]```Backported from master:dcb942d

Diff:3.3.1...3.3.2

A specially crafted packet could be incorrectly decoded.Example:```jsconst decoder = new Decoder();decoder.on("decoded", (packet) => {  console.log(packet.data); // prints [ 'hello', [Function: splice] ]})decoder.add('51-["hello",{"_placeholder":true,"num":"splice"}]');decoder.add(Buffer.from("world"));```As usual, please remember not to trust user input.Backported fromb5d0cb7

Diff:3.3.2...3.3.3