const { types: t, parse, transform } = require("@babel/core");
parse(`
type Test = 1 | -1;
`, {
parserOpts: {
plugins: ["typescript"],
},
}).program.body[0].typeAnnotation.types[1]
transform(`
type Test = 1 | -1;
`, {
parserOpts: {
plugins: ["typescript"],
},
plugins: [
({ types: t }) => ({
visitor: {
TSLiteralType(path) {
path.node = t.tsLiteralType(path.node.literal)
}
}
}),
],
})
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