gatsby
Version:
Blazing fast modern site generator for React
48 lines (46 loc) • 1.63 kB
JavaScript
;
exports.__esModule = true;
exports.hasSibling = hasSibling;
exports.removeExportProperties = removeExportProperties;
/**
* Check the node has at least one sibling.
*/
function hasSibling(path) {
return [...path.getAllPrevSiblings(), ...path.getAllNextSiblings()].length !== 0;
}
/**
* Remove specific properties from a destructured variable named export.
*
* If there are no other properties or declarations, the entire export declaration will be removed.
* If there are other properties, only the matching properties will be removed.
*
* Matches exports like these:
* ```
* export const { foo } = {} // or `let`/`var`
* export const { foo, bar: baz } = {} // or `let`/`var`
* ```
*
* This is cheaper than using a nested visitor and traversing upwards to check distance
* from the export declaration.
*/
function removeExportProperties(exportPath, objectPath, propertiesToRemove) {
for (let i = 0; i < objectPath.node.properties.length; i++) {
const property = objectPath.node.properties[i];
if (property.type !== `ObjectProperty` || property.value.type !== `Identifier` || !propertiesToRemove.includes(property.value.name)) {
continue;
}
const propertyPath = objectPath.get(`properties.${i}`);
if (hasSibling(propertyPath) && !propertyPath.removed) {
propertyPath.remove();
continue;
}
if (hasSibling(objectPath.parentPath) && !objectPath.parentPath.removed) {
objectPath.parentPath.remove();
break;
}
if (!exportPath.removed) {
exportPath.remove();
}
}
}
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