log4js-node/test/sandbox-coverage.js

const sandbox = require("@log4js-node/sandboxed-module");

sandbox.configure({
  sourceTransformers: {
    nyc(source) {
      if (this.filename.indexOf("node_modules") > -1) {
        return source;
      }
      const nyc = new (require("nyc"))();
      return nyc.instrumenter().instrumentSync(source, this.filename);
    }
  }
});