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Use supportsStaticESM to toggle runtime module usage. (#8520)

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This commit is contained in:
Logan Smyth
2018-08-24 10:48:47 -07:00
committed by GitHub
parent e841ccca34
commit 39fa102ee8
9 changed files with 75 additions and 3 deletions
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13
packages/babel-plugin-transform-runtime/src/index.js
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@@ -25,6 +25,10 @@ function resolveAbsoluteRuntime(moduleName: string, dirname: string) {
}
}
function supportsStaticESM(caller) {
return !!(caller && caller.supportsStaticESM);
}
export default declare((api, options, dirname) => {
api.assertVersion(7);
@@ -45,9 +49,9 @@ export default declare((api, options, dirname) => {
if (typeof useRuntimeHelpers !== "boolean") {
throw new Error("The 'helpers' option must be undefined, or a boolean.");
}
if (typeof useESModules !== "boolean") {
if (typeof useESModules !== "boolean" && useESModules !== "auto") {
throw new Error(
"The 'useESModules' option must be undefined, or a boolean.",
"The 'useESModules' option must be undefined, or a boolean, or 'auto'.",
);
}
if (
@@ -107,6 +111,9 @@ export default declare((api, options, dirname) => {
);
}
const esModules =
useESModules === "auto" ? api.caller(supportsStaticESM) : useESModules;
const injectCoreJS2 = `${corejsVersion}` === "2";
const moduleName = injectCoreJS2
? "@babel/runtime-corejs2"
@@ -145,7 +152,7 @@ export default declare((api, options, dirname) => {
isInteropHelper && !isModule(file.path) ? 4 : undefined;
const helpersDir =
useESModules && file.path.node.sourceType === "module"
esModules && file.path.node.sourceType === "module"
? "helpers/esm"
: "helpers";