Support for yarn projects

[lachrist]

Yarn is an important package manager. And it is the one that we use for appmap-js. We should support yarn projects.

[dividedmind]

Also, pnpm.

[dustinbyrne]

What about yarn or other package managers is unsupported? Do we have specific tie ins with npm or npx?

[dividedmind]

@lachrist correct me if I'm wrong, but I believe the problem is that the agent parses the user-provided command line to figure out how to call and hook the project, and these heuristics only support npm at the moment; cf.

appmap-agent-js/components/configuration-accessor/default/package.mjs

Lines 48 to 57 in 4ea08b3

	const executables = [
	["node"],
	["npm", "exec"],
	["npm", "x"],
	["npx"],
	["npm.cmd", "exec"],
	["npm.cmd", "x"],
	["npx.cmd"],
	[],
	];

[lachrist]

Indeed. I haven't thought about supporting anything other than npm so I'm not sure what else is needed to support yarn. I suspect it is not much.