How can I know whether the process is running in esbuild.serve in a plugin?

[JounQin]

I'm trying to write a html entry plugin for esbuild, and I want to know if it is running in esbuild.serve, because no physical file system is available to emit new files. Instead, I'm trying to use blob: url if possible on development(esbuild.serve).

For now, I have to declare an option serve?: boolean for this plugin.

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Besides, if there is a virtual file system API for esbuild.serve, that would be greater.

[evanw]

This is not possible at the moment, sorry.

For now, I have to declare an option serve?: boolean for this plugin.

This sounds like an appropriate workaround.

[jasonwilliams]

@JounQin do you have a link to your html plugin? Was stuck on a similar thing and blob sounds like a good idea