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Lazily inject imports to the JSX runtime (#12493)

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This commit is contained in:
Nicolò Ribaudo
2020-12-15 12:55:17 +01:00
committed by GitHub
parent a0c1a9a9e4
commit 28d2cbcbf3
14 changed files with 88 additions and 133 deletions
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21
packages/babel-plugin-transform-react-jsx/src/index.js
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@@ -27,13 +27,20 @@ export default declare((api, options) => {
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",
)();
const getter = get => ({ enumerable: true, configurable: true, get });
// TODO(Babel 8): helper-builder-react-jsx expects those properties to be AST nodes, but we want to
// generate them lazily so that we only inject imports when needed.
// These should actually be functions.
Object.defineProperties(state, {
jsxCallee: getter(pass.get("@babel/plugin-react-jsx/jsxIdentifier")),
jsxStaticCallee: getter(
pass.get("@babel/plugin-react-jsx/jsxStaticIdentifier"),
),
createElementCallee: getter(
pass.get("@babel/plugin-react-jsx/createElementIdentifier"),
),
});
state.pure =
PURE_ANNOTATION ??