Error in static-app build

[kwameopareasiedu]

There seems to be an issue with version 5.2.5 which causes an error in the build of a static app.
The odd thing is that downgrading (all the way to 5.1.8) does not seem to fix the error

To Reproduce
Steps to reproduce the behavior:

1. Install version 5.2.5 using npx
2. Add a simple component with an associated story
3. Run npm run build-storybook
4. See error
5. Open index.html of generated app
6. See error again

Expected behavior
According to your docs... the command should build a fully functional static app I can deploy anywhere

Screenshots

Code snippets
Here's my current dev-dependencies:

        "@babel/core": "^7.7.0",
        "@babel/plugin-transform-react-jsx": "^7.7.0",
        "@babel/plugin-transform-spread": "^7.6.2",
        "@babel/preset-env": "^7.7.0",
        "@babel/preset-react": "^7.7.0",
        "@storybook/addon-actions": "^5.2.5",
        "@storybook/addon-links": "^5.2.5",
        "@storybook/addons": "^5.2.5",
        "@storybook/react": "^5.2.5",
        "autoprefixer": "^9.7.1",
        "babel-eslint": "^10.0.3",
        "babel-loader": "^8.0.6",
        "css-loader": "^3.2.0",
        "eslint": "^6.6.0",
        "eslint-plugin-react": "^7.16.0",
        "node-sass": "^4.13.0",
        "postcss-loader": "^3.0.0",
        "prettier": "^1.18.2",
        "prop-types": "^15.7.2",
        "react": "^16.11.0",
        "react-redux": "^7.1.3",
        "react-router": "^5.1.2",
        "redux": "^4.0.4",
        "sass-loader": "^8.0.0",
        "style-loader": "^1.0.0"

Heres my webpack.config.js for storybook

const path = require("path");

module.exports = ({ config }) => {
    config.module.rules.push({
        test: /\.(scss|css)$/,
        exclude: /\node_modules/,
        use: [
            { loader: "style-loader" },
            { loader: "css-loader" },
            {
                loader: "postcss-loader",
                options: { plugins: () => [require("autoprefixer")] }
            },
            { loader: "sass-loader" }
        ]
    });

    config.resolve.extensions.push(".scss");

    return config;
};

System:

Environment Info:

  System:
    OS: Linux 4.15 Ubuntu 18.04.3 LTS (Bionic Beaver)
    CPU: (4) x64 Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz
  Binaries:
    Node: 10.15.3 - ~/.nvm/versions/node/v10.15.3/bin/node
    npm: 6.9.0 - ~/.nvm/versions/node/v10.15.3/bin/npm
  Browsers:
    Chrome: 77.0.3865.120
  npmPackages:
    @storybook/addon-actions: ^5.2.5 => 5.2.5 
    @storybook/addon-links: ^5.2.5 => 5.2.5 
    @storybook/addons: ^5.2.5 => 5.2.5 
    @storybook/react: ^5.2.5 => 5.2.5

[aaronbarker]

My team ran into the same issue. We tracked it back to an update to @babel/traverse. We Changed our package.json from "@babel/core": "^7.6.0", to "@babel/core": "7.6.0", (dropped the ^for this and all babel related dependencies) and then added a hardcoded"@babel/traverse": "7.6.0",` that we didn't have before. That fixed it for us.

YMMV but hopefully that helps others or helps debug for the storybook team.

Edit: Looks like I misread things and the page I linked to is the fix, not the cause (didn't read closely enough in our mad scramble to fix). You get the idea though ;)

[kwameopareasiedu]

Ohk... Thanks very much @aaronbarker for the insight...
Will test soon and close the issue if it fixes it...

[welingtonmanoel-hotmart]

+1

[kwameopareasiedu]

@aaronbarker
Apparently just installing @babel/traverse fixed the build (npm i -D @babel/traverse@7.6.0)...
I didn't even need to drop the ^ from the other babel libraries...

[kwameopareasiedu]

I'm closing this issue now since the problem has been fixed. A very big thank you to @aaronbarker for pointing me in the right direction...

[matt-shine]

I'm not sure that fixes it as the issue is intermittent (for me it usually fails the first attempt after removing node_modules and yarn.lock), but subsequent build-storybook attempts succeed.

Adding @babel/traverse@7.6.0 did not resolve for me (for a fresh install), and looking at yarn.lock I can see 7.7.2 being resolved by other dependencies. Attempting to force resolution of 7.6.0 via the package.json resolutions field hasn't panned out.

I'd be interested to see if your build succeeds the first attempt after removing node_modules and yarn.lock @kwameopareasiedu

[leomendoza123]

@matt-shine delete yarn-lock and node modules solve it for me!