Function onResolveFactory

a factory function that returns a general purpose path resolver function for your esbuild plugin, tuned to your specific config.

given a certain esbuild esbuild.OnResolveArgs | args, and your expected resolved esbuild.OnResolveResult | result here is what the returned resolver function takes care of:

1. figure out the absolute resolved result.path:

• if args.parse is an absolute path (i.e. when config.isAbsolutePath(args.parse) === true), then it will be returned as is.
• if args.parse is a relative path (i.e. when config.isAbsolutePath(args.parse) === false), then:
  • we figure out the absolute parent directory dir, by:
    • joining args.importer with args.resolveDir (via config.resolvePath) if args.importer is not absolute.
    • otherwise set dir to args.importer if it is absolute.
  • join dir with args.parse using config.resolvePath and return it as result.path.

2. take care of namespace:

• set result.namespace to config.namespace
• backup the original namespace args.namespace to config.pluginData.originalNamespace

3. inherit import maps from plugin data:

• set result.pluginData.importMap to args.pluginData.importMap (which is originally set by the loaders of our typical plugin)