stack-sites

stack-sites

Returns current stack as call sites

Install

npm install -S stack-sites

const stackSites = require('stack-sites')
function foo () {
  const sites = stackSites()
  // sites[0] - stackSites itself
  // sites[1] - this file
  // sites[2] - caller to this function
  const caller = sites[2]
  console.log('I got called from %s in %s line %d column %d',
    caller.functionName,
    caller.filename,
    caller.line, caller.column
  )
}
module.exports = foo

Why?

V8 stack API does not return accurate source locations if the source file has been transpiled on load, see Accurate call sites blog post. Exception stack on the other hand can take source maps into the account, producing correct line and column information.

Debug

To see the original and parsed stack, run with DEBUG=stack-sites environment variable.

Small print

Author: Gleb Bahmutov <[e-mail]> © 2017

• @bahmutov
• glebbahmutov.com
• blog

License: MIT - do anything with the code, but don't blame me if it does not work.

Support: if you find any problems with this module, email / tweet / open issue on Github

MIT License

Copyright (c) 2017 Gleb Bahmutov <[e-mail]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.