Refactor generated builder names in @babel/types #11582
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| } | ||
| }); | ||
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| Object.keys(definitions.DEPRECATED_KEYS).forEach(type => { | ||
| const newType = definitions.DEPRECATED_KEYS[type]; | ||
| output += `export function ${type}(...args: Array<any>): Object { | ||
| console.trace("The node type ${type} has been renamed to ${newType}"); | ||
| return ${type}("${type}", ...args); | ||
| return builder("${type}", ...args); |
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here was a bug, which would result in code like this:
export function RestProperty(...args: Array<any>): Object {
console.trace("The node type RestProperty has been renamed to RestElement");
return RestProperty("RestProperty", ...args);
}
which will cause infinite recursion when using such deprecated builder…
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| export { Super as super }; | ||
| export function TaggedTemplateExpression(...args: Array<any>): Object { | ||
| export { _super as Super }; | ||
| export { _super as super }; |
| // This is needed for backwards compatibility. | ||
| // It should be removed in the next major version. |
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Nit: could you remove this comment for now? We haven't discussed about it as a team yet.
Since uppercase builders have been around for so long, maybe in Babel 8 we will "soft-remove" them (i.e. not document them, and not represent them in .d.ts files) and add a deprecation warning.
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good point, updated the PR
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This is related to migration to typescript #11578
The issue is that if exported builder name starts from upper case character - it conflicts with a type name.
This PRs refactors generation of builders, so by default, they are named starting with a lowercase character, and for backward compatibility re-exported starting with upper-case (currently it is opposite). This will make it easier to separate backward compatibility exports from the default, during migration to typescript. And would make it easier to be removed in the major version.
Also, I updated all the places where the builder's name starting with the upper-case was used(this is to be needed after migrating to TypeScript).