https://github.com/cowboy/babel-runtime-wtf

What am I doing wrong with babel-runtime?
https://github.com/cowboy/babel-runtime-wtf

Last synced: 30 days ago
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What am I doing wrong with babel-runtime?

• Host: GitHub
• URL: https://github.com/cowboy/babel-runtime-wtf
• Owner: cowboy
• Created: 2016-01-21T16:36:12.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2016-01-21T20:19:13.000Z (almost 9 years ago)
• Last Synced: 2024-10-14T14:19:31.621Z (2 months ago)
• Language: JavaScript
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# babel-runtime-wtf

_(Should have been named babel-register-wtf, whoops)_

## What am I doing wrong with babel-register?

* Issue filed at 

```bash

$ npm install

...

# This error doesn't make sense to me. Why is the initial line number 3? Why

# does the code example show the transpiled code (var x = y;) instead of the

# original code (let x = y)?

$ node -r babel-register ./index

/private/tmp/test/index.js:3

var x = y;

        ^

ReferenceError: y is not defined

    at Object. (index.js:1:9)

    at Module._compile (module.js:435:26)

    at loader (/private/tmp/test/node_modules/babel-register/lib/node.js:130:5)

    at Object.require.extensions.(anonymous function) [as .js] (/private/tmp/test/node_modules/babel-register/lib/node.js:140:7)

    at Module.load (module.js:356:32)

    at Function.Module._load (module.js:311:12)

    at Function.Module.runMain (module.js:467:10)

    at startup (node.js:134:18)

    at node.js:961:3

# If I compile index.js to compiled.js and then (in a separate step) run the

# compiled code with sourcemap support, I get the stack trace I'm looking for.

# Why don't I see this when compiling on-the-fly with babel-register?

$ ./node_modules/.bin/babel --source-maps inline index.js --out-file compiled.js

$ node -r source-map-support/register ./compiled

index.js:1

let x = y

        ^

ReferenceError: y is not defined

    at Object. (index.js:1:9)

    at Module._compile (module.js:435:26)

    at Object.Module._extensions..js (module.js:442:10)

    at Module.load (module.js:356:32)

    at Function.Module._load (module.js:311:12)

    at Function.Module.runMain (module.js:467:10)

    at startup (node.js:134:18)

    at node.js:961:3

```