unix-permissions/build/src/types/symbolic/join.js

Swiss Army knife for Unix permissions

import{CATEGORIES}from"../../constants.js";


export const joinCategories=(node,index,nodes)=>{
const sameNodes=nodes.filter((nodeA)=>canJoinNodes(node,nodeA));


if(sameNodes.length===1){
return node
}

const categories=sameNodes.map((nodeA)=>nodeA.category);



if(categories[0]!==node.category){
return[]
}


if(categories.length===CATEGORIES.length){
return{...node,category:"a"}
}

return{...node,category:categories.join("")}
};

const canJoinNodes=(nodeA,nodeB)=>
nodeA.operator===nodeB.operator&&nodeA.permissions===nodeB.permissions;