forked from babel/babel
/
helpers.js
46 lines (42 loc) · 1.76 KB
/
helpers.js
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import semver from "semver";
import { types as t } from "@babel/core";
export function hasMinVersion(minVersion, runtimeVersion) {
// If the range is unavailable, we're running the script during Babel's
// build process, and we want to assume that all versions are satisfied so
// that the built output will include all definitions.
if (!runtimeVersion) return true;
// semver.intersects() has some surprising behavior with comparing ranges
// with preprelease versions. We add '^' to ensure that we are always
// comparing ranges with ranges, which sidesteps this logic.
// For example:
//
// semver.intersects(`<7.0.1`, "7.0.0-beta.0") // false - surprising
// semver.intersects(`<7.0.1`, "^7.0.0-beta.0") // true - expected
//
// This is because the first falls back to
//
// semver.satisfies("7.0.0-beta.0", `<7.0.1`) // false - surprising
//
// and this fails because a prerelease version can only satisfy a range
// if it is a prerelease within the same major/minor/patch range.
//
// Note: If this is found to have issues, please also revist the logic in
// babel-core's availableHelper() API.
if (semver.valid(runtimeVersion)) runtimeVersion = `^${runtimeVersion}`;
return (
!semver.intersects(`<${minVersion}`, runtimeVersion) &&
!semver.intersects(`>=8.0.0`, runtimeVersion)
);
}
// Note: We can't use NodePath#couldBeBaseType because it doesn't support arrays.
// Even if we added support for arrays, this package needs to be compatible with
// ^7.0.0 so we can't rely on it.
export function typeAnnotationToString(node) {
switch (node.type) {
case "GenericTypeAnnotation":
if (t.isIdentifier(node.id, { name: "Array" })) return "array";
break;
case "StringTypeAnnotation":
return "string";
}
}