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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,84 @@ | ||
'use strict'; | ||
|
||
const fs = require('fs'); | ||
const path = require('path'); | ||
const paths = require('./paths'); | ||
const chalk = require('react-dev-utils/chalk'); | ||
|
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/** | ||
* Get the baseUrl of a compilerOptions object. | ||
* | ||
* @param {Object} options | ||
*/ | ||
function getAdditionalModulePaths(options = {}) { | ||
const baseUrl = options.baseUrl; | ||
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// We need to explicitly check for null and undefined (and not a falsy value) because | ||
// TypeScript treats an empty string as `.`. | ||
if (baseUrl == null) { | ||
// If there's no baseUrl set we respect NODE_PATH | ||
// Note that NODE_PATH is deprecated and will be removed | ||
// in the next major release of create-react-app. | ||
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const nodePath = process.env.NODE_PATH || ''; | ||
return nodePath.split(path.delimiter).filter(Boolean); | ||
} | ||
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const baseUrlResolved = path.resolve(paths.appPath, baseUrl); | ||
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// We don't need to do anything if `baseUrl` is set to `node_modules`. This is | ||
// the default behavior. | ||
if (path.relative(paths.appNodeModules, baseUrlResolved) === '') { | ||
return null; | ||
} | ||
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// Allow the user set the `baseUrl` to `appSrc`. | ||
if (path.relative(paths.appSrc, baseUrlResolved) === '') { | ||
return [paths.appSrc]; | ||
} | ||
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// Otherwise, throw an error. | ||
throw new Error( | ||
chalk.red.bold( | ||
"Your project's `baseUrl` can only be set to `src` or `node_modules`." + | ||
' Create React App does not support other values at this time.' | ||
) | ||
); | ||
} | ||
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function getModules() { | ||
// Check if TypeScript is setup | ||
const hasTsConfig = fs.existsSync(paths.appTsConfig); | ||
const hasJsConfig = fs.existsSync(paths.appJsConfig); | ||
|
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if (hasTsConfig && hasJsConfig) { | ||
throw new Error( | ||
'You have both a tsconfig.json and a jsconfig.json. If you are using TypeScript please remove your jsconfig.json file.' | ||
); | ||
} | ||
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let config; | ||
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// If there's a tsconfig.json we assume it's a | ||
// TypeScript project and set up the config | ||
// based on tsconfig.json | ||
if (hasTsConfig) { | ||
config = require(paths.appTsConfig); | ||
// Otherwise we'll check if there is jsconfig.json | ||
// for non TS projects. | ||
} else if (hasJsConfig) { | ||
config = require(paths.appJsConfig); | ||
} | ||
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config = config || {}; | ||
const options = config.compilerOptions || {}; | ||
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const additionalModulePaths = getAdditionalModulePaths(options); | ||
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return { | ||
additionalModulePaths: additionalModulePaths, | ||
hasTsConfig, | ||
}; | ||
} | ||
|
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module.exports = getModules(); |
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