frontend/config/jest/fileTransform.js

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2021-10-26 16:08:21 +08:00
'use strict';
const path = require('path');
const camelcase = require('camelcase');
// This is a custom Jest transformer turning file imports into filenames.
// http://facebook.github.io/jest/docs/en/webpack.html
module.exports = {
process(src, filename) {
const assetFilename = JSON.stringify(path.basename(filename));
if (filename.match(/\.svg$/)) {
// Based on how SVGR generates a component name:
// https://github.com/smooth-code/svgr/blob/01b194cf967347d43d4cbe6b434404731b87cf27/packages/core/src/state.js#L6
const pascalCaseFilename = camelcase(path.parse(filename).name, {
pascalCase: true,
});
const componentName = `Svg${pascalCaseFilename}`;
return `const React = require('react');
module.exports = {
__esModule: true,
default: ${assetFilename},
ReactComponent: React.forwardRef(function ${componentName}(props, ref) {
return {
$$typeof: Symbol.for('react.element'),
type: 'svg',
ref: ref,
key: null,
props: Object.assign({}, props, {
children: ${assetFilename}
})
};
}),
};`;
}
return `module.exports = ${assetFilename};`;
},
};