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fix flow typeof refinement (#8161) [skip ci]

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dnalborczyk 2018-06-13 14:59:57 -04:00 committed by Henry Zhu
parent 60c4f30c71
commit 6894465df8
1 changed files with 3 additions and 4 deletions
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7
packages/babel-preset-env/src/utils.js
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@ -13,14 +13,13 @@ const versionRegExp = /^(\d+|\d+.\d+)$/;
// Convert version to a semver value.
// 2.5 -> 2.5.0; 1 -> 1.0.0;
export const semverify = (version: string | number): string => {
const isString = typeof version === "string";
if (isString && semver.valid(version)) {
if (typeof version === "string" && semver.valid(version)) {
return version;
}
invariant(
typeof version === "number" || (isString && versionRegExp.test(version)),
typeof version === "number" ||
(typeof version === "string" && versionRegExp.test(version)),
`'${version}' is not a valid version`,
);