Error: Jexl Function colorFeature is not defined

[yonglbl]

trying to use WebWorker RPC in JBrowseLinearGenomeView, after adding the

configuration: {
rpc: {
defaultDriver: 'WebWorkerRpcDriver',
},
},
makeWorkerInstance,

to the createViewState, each track has this error: "Error: Jexl Function colorFeature is not defined."

Error: Jexl Function colorFeature is not defined.

../node_modules/jexl/dist/evaluator/handlers.js:188:11 (at t.FunctionCall ()
../node_modules/jexl/dist/evaluator/Evaluator.js:57:35 (at)
../node_modules/jexl/dist/PromiseSync.js:37:25 (at e.value ()
../node_modules/jexl/dist/evaluator/Evaluator.js:56:37 (at e.value ()
../node_modules/jexl/dist/Expression.js:86:26 (at)
../node_modules/jexl/dist/PromiseSync.js:37:25 (at e.value ()
../node_modules/jexl/dist/Expression.js:82:32 (at e.value ()
../node_modules/jexl/dist/Expression.js:72:22 (at e.value ()
../node_modules/@jbrowse/core/configuration/util.js:27:47 (at a ()
../node_modules/@jbrowse/plugin-svg/esm/SvgFeatureRenderer/components/Box.js:35:26 (at)

[cmdcolin]

Hi there @yonglbl . I realized we didn't have an example of doing embedded+web worker+custom plugins. It is a little tricky: you have to make your own "worker" file that adds the custom plugin because the worker does the rendering

I made an example of doing this here in this PR GMOD/jbrowse-react-linear-genome-view-cra5-demo#1

[yonglbl]

it works, really appreciate it.