packages/babel-plugin-transform-react-jsx-development/src/index.js
import jsx from "@babel/plugin-syntax-jsx";
import { helper } from "@babel/helper-builder-react-jsx-experimental";
import { declare } from "@babel/helper-plugin-utils";
import { types as t } from "@babel/core";
export default declare((api, options) => {
const PURE_ANNOTATION = options.pure;
const visitor = helper(api, {
pre(state) {
const tagName = state.tagName;
const args = state.args;
if (t.react.isCompatTag(tagName)) {
args.push(t.stringLiteral(tagName));
} else {
args.push(state.tagExpr);
}
},
post(state, pass) {
if (pass.get("@babel/plugin-react-jsx/runtime") === "classic") {
state.createElementCallee = pass.get(
"@babel/plugin-react-jsx/createElementIdentifier",
)();
state.pure =
PURE_ANNOTATION ?? !pass.get("@babel/plugin-react-jsx/pragmaSet");
} else {
state.jsxCallee = pass.get("@babel/plugin-react-jsx/jsxIdentifier")();
state.jsxStaticCallee = pass.get(
"@babel/plugin-react-jsx/jsxStaticIdentifier",
)();
state.createElementCallee = pass.get(
"@babel/plugin-react-jsx/createElementIdentifier",
)();
state.pure =
PURE_ANNOTATION ??
!pass.get("@babel/plugin-react-jsx/importSourceSet");
}
},
...options,
development: true,
});
return {
name: "transform-react-jsx",
inherits: jsx,
visitor,
};
});