V3 experiments

[njoyard]

Complete API rewrite.

New dev tooling

• Node 18+ only
• yarn
• Typescript
• GH actions for CI
• ava for testing, with sinon for mocks, c8 and coveralls for coverage
• prettier

New API principles

• Zero dependencies (for users, of course we need devDependencies for development)
• Completely incompatible with fluent-ffmpeg 2.x. I'm still debating whether to include a compatibility layer that emits deprecation warnings, but that would be about the same work as rewriting 2.x from scratch.
• Natively typescript
• There is usually only one way to perform a given operation. No more methods with 42 aliases, or arguments that can be strings/arrays/objects and are a pain to validate.
• Replaced chaining with options object

await ffmpeg({
  input: 'path/to/input.webm',
  output: {
    target: 'path/to/output.mp4',
    video: { codec: 'h264', bitrate: '1M' },
    audio: false
  }
}).run()

Dropped features

The following features were not reimplemented:

• flvtool/flvmeta specifics; those should be mostly unused by now, people can still either use v2 or run flvtool/flvmeta themselves
• avconv/avprobe compatibility; libav is dead

[coveralls]

Pull Request Test Coverage Report for Build 6889204749

• 1040 of 1228 (84.69%) changed or added relevant lines in 15 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-6.1%) to 84.691%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/capabilities.ts	53	71	74.65%
src/process.ts	152	175	86.86%
src/command.ts	64	94	68.09%
src/main.ts	0	32	0.0%
src/utils/parsing.ts	231	316	73.1%

Totals
Change from base Build 6856211874:	-6.1%
Covered Lines:	1040
Relevant Lines:	1228

---

💛 - Coveralls

[cmd430]

I'm still debating whether to include a compatibility layer that emits deprecation warnings

my $0.02 since v3 is a major version bump breaking changes should be expected, adding a compatibility layer just adds unnecessary complexity

[gabrielstuff]

Do you need help on this ? @njoyard

[njoyard]

@gabrielstuff not really, it's taking a bit of time due to real life :)

But if you want to submit PRs on this branch, feel free.

[zolero]

No movement here anymore I suppose?