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Check the app name before proceeding. #628

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merged 6 commits into from
Sep 11, 2016
Merged

Check the app name before proceeding. #628

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01b57c9
Check the app name before proceeding.
mareksuscak Sep 11, 2016
8aaa612
Refactor.
mareksuscak Sep 11, 2016
0669da8
Use arrow function and template string.
mareksuscak Sep 11, 2016
03a0d8a
Remove comment.
mareksuscak Sep 11, 2016
8b4f5b1
Rephrase the error.
mareksuscak Sep 11, 2016
ddff528
Add missing semicolons.
mareksuscak Sep 11, 2016
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28 changes: 27 additions & 1 deletion global-cli/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -69,14 +69,17 @@ createApp(commands[0], argv.verbose, argv['scripts-version']);

function createApp(name, verbose, version) {
var root = path.resolve(name);
var appName = path.basename(root);

checkAppName(appName);

if (!pathExists.sync(name)) {
fs.mkdirSync(root);
} else if (!isSafeToCreateProjectIn(root)) {
console.log('The directory `' + name + '` contains file(s) that could conflict. Aborting.');
process.exit(1);
}

var appName = path.basename(root);
console.log(
'Creating a new React app in ' + root + '.'
);
Expand Down Expand Up @@ -167,6 +170,29 @@ function checkNodeVersion() {
}
}

function checkAppName(appName) {
// TODO: there should be a single place that holds the dependencies
var dependencies = ['react', 'react-dom'];
var devDependencies = ['react-scripts'];
var allDependencies = dependencies.concat(devDependencies).sort();

if (allDependencies.indexOf(appName) >= 0) {
console.error(
chalk.red(
`Can't use "${appName}" as the app name because a dependency with the same name exists.\n\n` +
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This file can’t use template strings. It’s meant to be runnable in older nodes, at least until we warn about unsupported version.

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Oops, I'm very sorry. I've got confused by this line but now I realized it's for create-react-app project itself.

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Also requirement for Node >=4 is stated in the README. It is misleading. Shall we change that?
screen shot 2016-09-18 at 14 03 55

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@mareksuscak The requirement for Node >= 4 is correct, however we want this entry point file to still run in older versions, so that instead of just crashing, we can show a warning, if someone tries to use an unsupported version.

This is what it looks like:
screen shot 2016-09-18 at 15 16 00

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Oh, good then. Didn't know. Thanks for explaining.

`Following names ${chalk.red.bold('must not')} be used:\n\n`
)

+

chalk.cyan(
allDependencies.map(depName => ` ${depName}`).join('\n')
)
);
process.exit(1);
}
}

// If project only contains files generated by GH, it’s safe.
// We also special case IJ-based products .idea because it integrates with CRA:
// https://github.com/facebookincubator/create-react-app/pull/368#issuecomment-243446094
Expand Down