@bpmn-io/feel-lint NPM

@bpmn-io/feel-lint

Linting for FEEL expressions.

Usage

There are 2 ways to use this library:

Linting string expressions

The lintExpression function takes a string expression and returns a list of linting errors.

import { lintExpression } from "@bpmn-io/feel-lint"

lintExpression('foo = bar');

You may pass custom language configuration to the editor:

lintExpression('> 10, "yes", mike\'s name', {
  dialect: 'unaryTests',
  context: {
    "mike's name": "Mike the might"
  }
});

CodeMirror plugin

The cmFeelLinter function returns a LintSource that you can use to extend your CodeMirror instance.

import { cmFeelLinter } from "@bpmn-io/feel-lint"
import { linter } from '@codemirror/lint';

// ...

const myEditor = new EditorView({
    state: EditorState.create({
      doc: '',
      extensions: [
        linter(cmFeelLinter())
      ]
    })
  });