error: Cannot read property 'isIfStatement' of null

[eeve]

Bug Report

Current Behavior
babel-preset-minify
Cannot read property 'isIfStatement' of null

Input Code
https://github.com/eeve/test.v2

// module-a.js
export default function () {
    return 1;
}

Babel Configuration (.babelrc, package.json, cli command)

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "debug": true,
        "useBuiltIns": "usage",
        "targets": {
          "node": 6
        }
      }
    ],
    "minify"
  ],
  "sourceMaps": "inline"
}

Environment

• Babel version(s): v7.0.0-beta.47
• Node/npm version: Node 8.9.4/npm 6.0.0
• Monorepo: no
• How you are using Babel: cli

Additional context/Screenshots

[Cyp]

This is fixed in #848.

[boopathi]

You can try the master branch by installing the canary version - https://github.com/babel/minify/tree/master/docs#canary-version ..

I'm closing this issue now. If the issue still persists in the canary version, please comment here to reopen the issue.

[webyonet]

this problem still exists in this module "babel-plugin-minify-constant-folding": "^0.4.3"

[DeadIine]

Any news on this? I get the same error with "babel-plugin-minify-constant-folding": "^0.4.3"

edit: worked with yarn add babel-preset-minify@canary

[swernerx]

Still the same issue for me. Please re-open.

Cannot read property 'isIfStatement' of null

    at evaluateBasedOnControlFlow (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/babel-helper-evaluate-path/lib/index.js:159:32)
    at evaluateIdentifier (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/babel-helper-evaluate-path/lib/index.js:117:26)
    at evaluate (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/babel-helper-evaluate-path/lib/index.js:19:12)
    at PluginPass.Expression (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/babel-plugin-minify-constant-folding/lib/index.js:165:21
)
    at PluginPass.newFn (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/visitors.js:230:17)
    at newFn (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/visitors.js:193:21)
    at NodePath._call (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/path/context.js:53:20)
    at NodePath.call (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/path/context.js:40:17)
    at NodePath.visit (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/path/context.js:88:12)
    at TraversalContext.visitQueue (/Users/swerner/Workspace/init/init-stopnet-display/node_modules/@babel/traverse/lib/context.js:118:16)

[SouperSudo]

Had this issue with build, and can confirm working with:
yarn add babel-preset-minify@canary

[NikaBuligini]

babel-preset-minify@canary works in my case as well

[ChrisWiles]

When will this be fixed on the main branch?

[villasv]

Considering that the canary release is 0.5.0-beta.54, probably when 0.5.0 is released.

[MitsuhaKitsune]

Same bug on last release, with canary all work fine

[ndelangen]

Am also experiencing this, can confirm it's been fixed on the canary