Unexpected exception:RangeError (index): Index out of range: index should be less than 1: 1

[FDiskas]

Im using: 1.0.0-alpha.1 compiled with dart2js 1.20.1
I got the following error:

Unexpected exception:RangeError (index): Index out of range: index should be less than 1: 1
node_modules/dart-sass/sass.dart.js 4154:17   wrapException
node_modules/dart-sass/sass.dart.js 4104:15   ioore
node_modules/dart-sass/sass.dart.js 17688:22  Environment.getFunction$1
node_modules/dart-sass/sass.dart.js 27465:66  _PerformVisitor.visitFunctionExpression$1
node_modules/dart-sass/sass.dart.js 16014:24  FunctionExpression.accept$1
node_modules/dart-sass/sass.dart.js 27370:75  _PerformVisitor.visitVariableDeclaration$1
node_modules/dart-sass/sass.dart.js 16637:24  VariableDeclaration.accept$1
node_modules/dart-sass/sass.dart.js 31349:41  J.accept$1$x
node_modules/dart-sass/sass.dart.js 28126:13  _PerformVisitor__visitDynamicImport__closure.call$0
node_modules/dart-sass/sass.dart.js 27703:27  _PerformVisitor._withEnvironment$2

My environment is:
package.json

{
  "name": "untitled",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "dev": "dart-sass ./src/main.scss dist/main.css  > ./dist/main.css"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bootstrap-sass": "^3.3.7"
  },
  "devDependencies": {
    "dart-sass": "^1.0.0-alpha.1"
  }
}

src/main.scss

@import "../node_modules/bootstrap-sass/assets/stylesheets/_bootstrap";

[FDiskas]

📣 Probably I want to mutch. But its good point to test this :)

[nex3]

This looks like something @kaelig was seeing, but we couldn't figure out what was causing it. Unfortunately, knowing that the culprit is somewhere in all of bootstrap doesn't narrow it down much. Let me know if you can find a more isolated chunk of stylesheet that reproduces this.

[FDiskas]

npm install gnomon

p.s. about benchmark. dart-sass with error returns the following

npm run dev | gnomon

returns Total 0.0117s

And the node-sass - with successfully builded whole bootstrap
returns: Total 0.0132s

[FDiskas]

And the error is caused by this line in bootstrap settings scss file

$gray-darker:            lighten($gray-base, 13.5%) !default; // #222

Same error and for darken(#428bca, 6.5%);

[FDiskas]

And all other functions like ceil, floor, rgba and some logick like
(720px + $grid-gutter-width)
causing this errors

[nshahan]

I think I am getting a similar issue. I just created a simple test to reproduce the issue.

#20

[nex3]

Fixed by e0fd5ea.

[praharshbhatt]

can anyone help with the same issue here ?

[nshahan]

@praharshbhatt Since you are getting this error from another project entirely the symptom (error message) is the same but the root cause is completely different. Somewhere in the code you are using there is an attempt to perform an index operation with a value that is outside the range of the collection being indexed into.