forked from babel/babel
/
index.js
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/
index.js
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import { declare } from "@babel/helper-plugin-utils";
import transformTypeScript from "@babel/plugin-transform-typescript";
import { OptionValidator } from "@babel/helper-validator-option";
const v = new OptionValidator("@babel/preset-typescript");
export default declare((api, opts) => {
api.assertVersion(7);
const {
allowDeclareFields,
allowNamespaces,
jsxPragma,
onlyRemoveTypeImports,
} = opts;
const jsxPragmaFrag = v.validateStringOption(
"jsxPragmaFrag",
opts.jsxPragmaFrag,
"React.Fragment",
);
const allExtensions = v.validateBooleanOption(
"allExtensions",
opts.allExtensions,
false,
);
const isTSX = v.validateBooleanOption("isTSX", opts.isTSX, false);
if (isTSX) {
v.invariant(allExtensions, "isTSX:true requires allExtensions:true");
}
const pluginOptions = isTSX => ({
allowDeclareFields,
allowNamespaces,
isTSX,
jsxPragma,
jsxPragmaFrag,
onlyRemoveTypeImports,
});
return {
overrides: allExtensions
? [
{
plugins: [[transformTypeScript, pluginOptions(isTSX)]],
},
]
: [
{
// Only set 'test' if explicitly requested, since it requires that
// Babel is being called`
test: /\.ts$/,
plugins: [[transformTypeScript, pluginOptions(false)]],
},
{
// Only set 'test' if explicitly requested, since it requires that
// Babel is being called`
test: /\.tsx$/,
plugins: [[transformTypeScript, pluginOptions(true)]],
},
],
};
});