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I can't say for sure if the fault lies with the babel core packages or babel-plugin-istanbul...@babel/preset-env with forceAllTransforms: true by itself doesn't choke on the code below, and neither does babel-plugin-istanbul by itself. But when they're run together, an error gets thrown.
The parseInt(f) gets transformed into cov_1c743zp148().b[0][1]++, parseInt(f). But for some reason that expression is orphaned by the time @babel/plugin-transform-block-scoping tries to rename f to _f, causing an error to be thrown.
$ npm test
> babel-plugin-istanbul-issue@1.0.0 test
> babel index.js
ReferenceError: /Users/andy/gh/babel-plugin-istanbul-issue/index.js: Container is falsy
at NodePath._replaceWith (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/path/replacement.js:135:11)
at NodePath.replaceWith (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/path/replacement.js:126:8)
at wrapLoopBody (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/plugin-transform-block-scoping/lib/loop.js:162:43)
at PluginPass.Loop (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/plugin-transform-block-scoping/lib/index.js:82:50)
at newFn (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/visitors.js:160:14)
at NodePath._call (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/path/context.js:46:20)
at NodePath.call (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/path/context.js:36:17)
at NodePath.visit (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/path/context.js:82:31)
at TraversalContext.visitQueue (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/context.js:89:16)
at TraversalContext.visitMultiple (/Users/andy/gh/babel-plugin-istanbul-issue/node_modules/@babel/traverse/lib/context.js:61:17) {
code: 'BABEL_TRANSFORM_ERROR'
}
The text was updated successfully, but these errors were encountered:
jedwards1211
changed the title
Container is falsy error on recent versions of babel plugins and unusual for loop variables
Container is falsy error with recent versions of babel plugins and unusual for loop variables
Mar 14, 2024
jedwards1211
changed the title
Container is falsy error with recent versions of babel plugins and unusual for loop variables
Container is falsy error with recent versions of babel plugins and uninitialized for loop variable
Mar 14, 2024
jedwards1211
changed the title
Container is falsy error with recent versions of babel plugins and uninitialized for loop variable
Container is falsy error with recent versions of babel plugins and reassignment of loop-scoped variable
Mar 14, 2024
jedwards1211
changed the title
Container is falsy error with recent versions of babel plugins and reassignment of loop-scoped variable
"Container is falsy" error with recent versions of babel plugins and reassignment of loop-scoped variable
Mar 14, 2024
I can't say for sure if the fault lies with the babel core packages or
babel-plugin-istanbul
...@babel/preset-env
withforceAllTransforms: true
by itself doesn't choke on the code below, and neither doesbabel-plugin-istanbul
by itself. But when they're run together, an error gets thrown.Issue repository
https://github.com/jedwards1211/babel-plugin-istanbul-issue
Code
The
parseInt(f)
gets transformed intocov_1c743zp148().b[0][1]++, parseInt(f)
. But for some reason that expression is orphaned by the time@babel/plugin-transform-block-scoping
tries to renamef
to_f
, causing an error to be thrown.Babel config
Package versions
Error message
The text was updated successfully, but these errors were encountered: