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eve

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Filesystem-first framework for durable backend AI agents that run anywhere.

github.com/vercel/eve

vercel/eve

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import{readFile,writeFile}from"node:fs/promises";async function appendEnv(n,r,i={}){let a=``;try{a=await readFile(n,`utf8`)}catch(e){if(e.code!==`ENOENT`)throw e}let o=a.split(` `),s=[],c=[];for(let[e,t]of Object.entries(r)){let n=o.findIndex(t=>t.startsWith(`${e}=`));n>=0?i.force?(o[n]=`${e}=${t}`,s.push(e)):c.push(e):(o.push(`${e}=${t}`),s.push(e))}for(;o.length>0&&o[o.length-1]===``;)o.pop();return await writeFile(n,`${o.join(` `)}\n`,`utf8`),{written:s,skipped:c}}export{appendEnv};