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Delete undefined options so we handle old core versions with new CLI versions. (#8728)

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Logan Smyth 2018-09-19 08:56:40 -07:00 committed by GitHub
parent 9e7c7f5683
commit 3b0f9a9f1e
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1 changed files with 40 additions and 29 deletions
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21
packages/babel-cli/src/babel/options.js
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@ -221,8 +221,7 @@ export default function parseArgv(args: Array<string>) {
const opts = commander.opts();
return {
babelOptions: {
const babelOptions = {
presets: opts.presets,
plugins: opts.plugins,
rootMode: opts.rootMode,
@ -247,10 +246,22 @@ export default function parseArgv(args: Array<string>) {
// leave them undefined so that @babel/core can handle the
// default-assignment logic on its own.
babelrc: opts.babelrc === true ? undefined : opts.babelrc,
highlightCode:
opts.highlightCode === true ? undefined : opts.highlightCode,
highlightCode: opts.highlightCode === true ? undefined : opts.highlightCode,
comments: opts.comments === true ? undefined : opts.comments,
},
};
// If the @babel/cli version is newer than the @babel/core version, and we have added
// new options for @babel/core, we'll potentially get option validation errors from
// @babel/core. To avoid that, we delete undefined options, so @babel/core will only
// give the error if users actually pass an unsupported CLI option.
for (const key of Object.keys(babelOptions)) {
if (babelOptions[key] === undefined) {
delete babelOptions[key];
}
}
return {
babelOptions,
cliOptions: {
filename: opts.filename,
filenames,