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Missing helpers only throw once #10187

nicolo-ribaudo opened this issue Jul 9, 2019 · 0 comments


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commented Jul 9, 2019

Bug Report

Input Code

const input = ``;

const out = babel.transformSync(input, {
  configFile: false,
  plugins: [
    function() {
      return {
        visitor: {
          Program(path) {
            try {
              path.pushContainer("body", this.addHelper("fooBar"));
            } catch {}
            path.pushContainer("body", this.addHelper("fooBar"));


Expected behavior/code
It should fail, because the second addHelper call should throw.

*Actual behavior



  • Babel version(s): 7.5.0
  • Node/npm version: [e.g. Node 8/npm 5]
  • OS: [e.g. OSX 10.13.4, Windows 10]
  • Monorepo: [e.g. yes/no/Lerna]
  • How you are using Babel: [e.g. cli, register, loader]
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