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typescript.js
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typescript.js
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const ensureRequire = require('../ensure-require')
const babelJest = require('babel-jest').default
const {
getBabelOptions,
getTsJestConfig,
stripInlineSourceMap,
getCustomTransformer,
getVueJestConfig
} = require('../utils')
module.exports = {
process(scriptContent, filePath, { config }) {
ensureRequire('typescript', ['typescript'])
const typescript = require('typescript')
const vueJestConfig = getVueJestConfig(config)
const tsconfig = getTsJestConfig(config)
const babelOptions = getBabelOptions(filePath)
const res = typescript.transpileModule(scriptContent, {
...tsconfig,
fileName: filePath
})
res.outputText = stripInlineSourceMap(res.outputText)
const inputSourceMap =
res.sourceMapText !== undefined ? JSON.parse(res.sourceMapText) : ''
// handle ES modules in TS source code in case user uses non commonjs module
// output and there is no .babelrc.
let inlineBabelOptions = {}
if (
tsconfig.compilerOptions.module !== typescript.ModuleKind.CommonJS &&
!babelOptions
) {
inlineBabelOptions = {
plugins: [require('@babel/plugin-transform-modules-commonjs')]
}
}
const customTransformer =
getCustomTransformer(vueJestConfig['transform'], 'js') || {}
const transformer = customTransformer.process
? customTransformer
: babelJest.createTransformer(
Object.assign(inlineBabelOptions, {
inputSourceMap
})
)
return transformer.process(res.outputText, filePath, { config })
}
}