next
Version:
The React Framework
26 lines (25 loc) • 906 B
JavaScript
/**
* Hoists a name from a module or promised module.
*
* @param module the module to hoist the name from
* @param name the name to hoist
* @returns the value on the module (or promised module)
*/ export function hoist(module, name) {
// If the name is available in the module, return it.
if (name in module) {
return module[name];
}
// If a property called `then` exists, assume it's a promise and
// return a promise that resolves to the name.
if ('then' in module && typeof module.then === 'function') {
return module.then((mod)=>hoist(mod, name));
}
// If we're trying to hoise the default export, and the module is a function,
// return the module itself.
if (typeof module === 'function' && name === 'default') {
return module;
}
// Otherwise, return undefined.
return undefined;
}
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