index.js
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _helperPluginUtils = require("@babel/helper-plugin-utils");
var _helperAnnotateAsPure = require("@babel/helper-annotate-as-pure");
var _core = require("@babel/core");
const PURE_CALLS = [["react", new Set(["cloneElement", "createContext", "createElement", "createFactory", "createRef", "forwardRef", "isValidElement", "memo", "lazy"])], ["react-dom", new Set(["createPortal"])]];
var _default = (0, _helperPluginUtils.declare)(api => {
api.assertVersion(7);
return {
name: "transform-react-pure-annotations",
visitor: {
CallExpression(path) {
if (isReactCall(path)) {
(0, _helperAnnotateAsPure.default)(path);
}
}
}
};
});
exports.default = _default;
function isReactCall(path) {
const calleePath = path.get("callee");
if (!calleePath.isMemberExpression()) {
for (const [module, methods] of PURE_CALLS) {
for (const method of methods) {
if (calleePath.referencesImport(module, method)) {
return true;
}
}
}
return false;
}
const object = calleePath.get("object");
const callee = calleePath.node;
if (!callee.computed && _core.types.isIdentifier(callee.property)) {
const propertyName = callee.property.name;
for (const [module, methods] of PURE_CALLS) {
if (object.referencesImport(module, "default") || object.referencesImport(module, "*")) {
return methods.has(propertyName);
}
}
}
return false;
}