51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
/* eslint max-len: 0 */
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export default function ({ types: t }) {
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let JSX_ANNOTATION_REGEX = /\*?\s*@jsx\s+([^\s]+)/;
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let visitor = require("babel-helper-builder-react-jsx")({
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pre(state) {
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let tagName = state.tagName;
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let args = state.args;
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if (t.react.isCompatTag(tagName)) {
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args.push(t.stringLiteral(tagName));
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} else {
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args.push(state.tagExpr);
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}
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},
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post(state, pass) {
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state.callee = pass.get("jsxIdentifier")();
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}
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});
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visitor.Program = function (path, state) {
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let { file } = state;
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let id = state.opts.pragma || "React.createElement";
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for (let comment of (file.ast.comments: Array<Object>)) {
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let matches = JSX_ANNOTATION_REGEX.exec(comment.value);
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if (matches) {
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id = matches[1];
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if (id === "React.DOM") {
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throw file.buildCodeFrameError(comment, "The @jsx React.DOM pragma has been deprecated as of React 0.12");
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} else {
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break;
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}
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}
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}
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state.set(
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"jsxIdentifier",
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() => id.split(".").map((name) => t.identifier(name)).reduce(
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(object, property) => t.memberExpression(object, property)
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)
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);
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};
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return {
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inherits: require("babel-plugin-syntax-jsx"),
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visitor
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};
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}
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