@electric-sql/pglite/dist/fs/opfs-ahp.cjs

PGlite is a WASM Postgres build packaged into a TypeScript client library that enables you to run Postgres in the browser, Node.js and Bun, with no need to install any other dependencies. It is only 3.7mb gzipped.

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d(this,b).values())r.close();d(this,S).flush(),d(this,S).close(),this.pg.Module.FS.quit()}async maintainPool(r){r=r||this.maintainedPoolSize;let n=r-this.state.pool.length,o=[];for(let i=0;i<n;i++)o.push(new Promise(async s=>{++this.poolCounter;let a=`${(Date.now()-1704063600).toString(16).padStart(8,"0")}-${this.poolCounter.toString(16).padStart(8,"0")}`,c=await d(this,I).getFileHandle(a,{create:!0}),u=await c.createSyncAccessHandle();d(this,x).set(a,c),d(this,b).set(a,u),p(this,l,j).call(this,{opp:"createPoolFile",args:[a]}),this.state.pool.push(a),s()}));for(let i=0;i>n;i--)o.push(new Promise(async s=>{let a=this.state.pool.pop();p(this,l,j).call(this,{opp:"deletePoolFile",args:[a]});let c=d(this,x).get(a);d(this,b).get(a)?.close(),await d(this,I).removeEntry(c.name),d(this,x).delete(a),d(this,b).delete(a),s()}));await Promise.all(o)}_createPoolFileState(r){this.state.pool.push(r)}_deletePoolFileState(r){let n=this.state.pool.indexOf(r);n>-1&&this.state.pool.splice(n,1)}async maybeCheckpointState(){Date.now()-this.lastCheckpoint>this.checkpointInterval&&await this.checkpointState()}async checkpointState(){let r=new TextEncoder().encode(JSON.stringify(this.state));d(this,S).truncate(0),d(this,S).write(r,{at:0}),d(this,S).flush(),this.lastCheckpoint=Date.now()}flush(){for(let r of d(this,T))try{r.flush()}catch{}d(this,T).clear()}chmod(r,n){p(this,l,R).call(this,{opp:"chmod",args:[r,n]},()=>{this._chmodState(r,n)})}_chmodState(r,n){let o=p(this,l,w).call(this,r);o.mode=n}close(r){let n=p(this,l,Y).call(this,r);d(this,M).delete(r),d(this,U).delete(n)}fstat(r){let n=p(this,l,Y).call(this,r);return this.lstat(n)}lstat(r){let n=p(this,l,w).call(this,r),o=n.type==="file"?d(this,b).get(n.backingFilename).getSize():0,i=4096;return{dev:0,ino:0,mode:n.mode,nlink:1,uid:0,gid:0,rdev:0,size:o,blksize:i,blocks:Math.ceil(o/i),atime:n.lastModified,mtime:n.lastModified,ctime:n.lastModified}}mkdir(r,n){p(this,l,R).call(this,{opp:"mkdir",args:[r,n]},()=>{this._mkdirState(r,n)})}_mkdirState(r,n){let o=p(this,l,A).call(this,r),i=o.pop(),s=[],a=this.state.root;for(let u of o){if(s.push(r),!Object.prototype.hasOwnProperty.call(a.children,u))if(n?.recursive)this.mkdir(s.join("/"));else throw new f("ENOENT","No such file or directory");if(a.children[u].type!=="directory")throw new f("ENOTDIR","Not a directory");a=a.children[u]}if(Object.prototype.hasOwnProperty.call(a.children,i))throw new f("EEXIST","File exists");let c={type:"directory",lastModified:Date.now(),mode:n?.mode||fe.DIR,children:{}};a.children[i]=c}open(r,n,o){if(p(this,l,w).call(this,r).type!=="file")throw new f("EISDIR","Is a directory");let s=p(this,l,Le).call(this);return d(this,M).set(s,r),d(this,U).set(r,s),s}readdir(r){let n=p(this,l,w).call(this,r);if(n.type!=="directory")throw new f("ENOTDIR","Not a directory");return Object.keys(n.children)}read(r,n,o,i,s){let a=p(this,l,Y).call(this,r),c=p(this,l,w).call(this,a);if(c.type!=="file")throw new f("EISDIR","Is a directory");return d(this,b).get(c.backingFilename).read(new Uint8Array(n.buffer,o,i),{at:s})}rename(r,n){p(this,l,R).call(this,{opp:"rename",args:[r,n]},()=>{this._renameState(r,n,!0)})}_renameState(r,n,o=!1){let i=p(this,l,A).call(this,r),s=i.pop(),a=p(this,l,w).call(this,i.join("/"));if(!Object.prototype.hasOwnProperty.call(a.children,s))throw new f("ENOENT","No such file or directory");let c=p(this,l,A).call(this,n),u=c.pop(),m=p(this,l,w).call(this,c.join("/"));if(o&&Object.prototype.hasOwnProperty.call(m.children,u)){let h=m.children[u];d(this,b).get(h.backingFilename).truncate(0),this.state.pool.push(h.backingFilename)}m.children[u]=a.children[s],delete a.children[s]}rmdir(r){p(this,l,R).call(this,{opp:"rmdir",args:[r]},()=>{this._rmdirState(r)})}_rmdirState(r){let n=p(this,l,A).call(this,r),o=n.pop(),i=p(this,l,w).call(this,n.join("/"));if(!Object.prototype.hasOwnProperty.call(i.children,o))throw new f("ENOENT","No such file or directory");let s=i.children[o];if(s.type!=="directory")throw new f("ENOTDIR","Not a directory");if(Object.keys(s.children).length>0)throw new f("ENOTEMPTY","Directory not empty");delete i.children[o]}truncate(r,n=0){let o=p(this,l,w).call(this,r);if(o.type!=="file")throw new f("EISDIR","Is a directory");let i=d(this,b).get(o.backingFilename);if(!i)throw new f("ENOENT","No such file or directory");i.truncate(n),d(this,T).add(i)}unlink(r){p(this,l,R).call(this,{opp:"unlink",args:[r]},()=>{this._unlinkState(r,!0)})}_unlinkState(r,n=!1){let o=p(this,l,A).call(this,r),i=o.pop(),s=p(this,l,w).call(this,o.join("/"));if(!Object.prototype.hasOwnProperty.call(s.children,i))throw new f("ENOENT","No such file or directory");let a=s.children[i];if(a.type!=="file")throw new f("EISDIR","Is a directory");if(delete s.children[i],n){let c=d(this,b).get(a.backingFilename);c?.truncate(0),d(this,T).add(c),d(this,U).has(r)&&(d(this,M).delete(d(this,U).get(r)),d(this,U).delete(r))}this.state.pool.push(a.backingFilename)}utimes(r,n,o){p(this,l,R).call(this,{opp:"utimes",args:[r,n,o]},()=>{this._utimesState(r,n,o)})}_utimesState(r,n,o){let i=p(this,l,w).call(this,r);i.lastModified=o}writeFile(r,n,o){let i=p(this,l,A).call(this,r),s=i.pop(),a=p(this,l,w).call(this,i.join("/"));if(Object.prototype.hasOwnProperty.call(a.children,s)){let m=a.children[s];m.lastModified=Date.now(),p(this,l,j).call(this,{opp:"setLastModified",args:[r,m.lastModified]})}else{if(this.state.pool.length===0)throw new Error("No more file handles available in the pool");let m={type:"file",lastModified:Date.now(),mode:o?.mode||fe.FILE,backingFilename:this.state.pool.pop()};a.children[s]=m,p(this,l,j).call(this,{opp:"createFileNode",args:[r,m]})}let c=a.children[s],u=d(this,b).get(c.backingFilename);n.length>0&&(u.write(typeof n=="string"?new TextEncoder().encode(n):new Uint8Array(n),{at:0}),r.startsWith("/pg_wal")&&d(this,T).add(u))}_createFileNodeState(r,n){let o=p(this,l,A).call(this,r),i=o.pop(),s=p(this,l,w).call(this,o.join("/"));s.children[i]=n;let a=this.state.pool.indexOf(n.backingFilename);return a>-1&&this.state.pool.splice(a,1),n}_setLastModifiedState(r,n){let o=p(this,l,w).call(this,r);o.lastModified=n}write(r,n,o,i,s){let a=p(this,l,Y).call(this,r),c=p(this,l,w).call(this,a);if(c.type!=="file")throw new f("EISDIR","Is a directory");let u=d(this,b).get(c.backingFilename);if(!u)throw new f("EBADF","Bad file descriptor");let m=u.write(new Uint8Array(n,o,i),{at:s});return a.startsWith("/pg_wal")&&d(this,T).add(u),m}};X=new WeakMap,G=new WeakMap,I=new WeakMap,J=new WeakMap,S=new WeakMap,x=new WeakMap,b=new WeakMap,K=new WeakMap,M=new WeakMap,U=new WeakMap,T=new WeakMap,l=new WeakSet,He=async function(){z(this,X,await navigator.storage.getDirectory()),z(this,G,await p(this,l,ge).call(this,this.dataDir,{create:!0})),z(this,I,await p(this,l,ge).call(this,Mt,{from:d(this,G),create:!0})),z(this,J,await d(this,G).getFileHandle(It,{create:!0})),z(this,S,await d(this,J).createSyncAccessHandle());let r=new ArrayBuffer(d(this,S).getSize());d(this,S).read(r,{at:0});let n,o=new TextDecoder().decode(r).split(`
`),i=!1;try{n=JSON.parse(o[0])}catch{n={root:{type:"directory",lastModified:Date.now(),mode:fe.DIR,children:{}},pool:[]},d(this,S).truncate(0),d(this,S).write(new TextEncoder().encode(JSON.stringify(n)),{at:0}),i=!0}this.state=n;let s=o.slice(1).filter(Boolean).map(m=>JSON.parse(m));for(let m of s){let h=`_${m.opp}State`;if(typeof this[h]=="function")try{this[h].bind(this)(...m.args)}catch(D){console.warn("Error applying OPFS AHP WAL entry",m,D)}}let a=[],c=async m=>{if(m.type==="file")try{let h=await d(this,I).getFileHandle(m.backingFilename),D=await h.createSyncAccessHandle();d(this,x).set(m.backingFilename,h),d(this,b).set(m.backingFilename,D)}catch(h){console.error("Error opening file handle for node",m,h)}else for(let h of Object.values(m.children))a.push(c(h))};await c(this.state.root);let u=[];for(let m of this.state.pool)u.push(new Promise(async h=>{d(this,x).has(m)&&console.warn("File handle already exists for pool file",m);let D=await d(this,I).getFileHandle(m),je=await D.createSyncAccessHandle();d(this,x).set(m,D),d(this,b).set(m,je),h()}));await Promise.all([...a,...u]),await this.maintainPool(i?this.initialPoolSize:this.maintainedPoolSize)},R=function(r,n){let o=p(this,l,j).call(this,r);try{n()}catch(i){throw d(this,S).truncate(o),i}},j=function(r){let n=JSON.stringify(r),o=new TextEncoder().encode(`
${n}`),i=d(this,S).getSize();return d(this,S).write(o,{at:i}),d(this,T).add(d(this,S)),i},A=function(r){return r.split("/").filter(Boolean)},w=function(r,n){let o=p(this,l,A).call(this,r),i=n||this.state.root;for(let s of o){if(i.type!=="directory")throw new f("ENOTDIR","Not a directory");if(!Object.prototype.hasOwnProperty.call(i.children,s))throw new f("ENOENT","No such file or directory");i=i.children[s]}return i},Y=function(r){let n=d(this,M).get(r);if(!n)throw new f("EBADF","Bad file descriptor");return n},Le=function(){let r=++se(this,K)._;for(;d(this,M).has(r);)se(this,K)._++;return r},ge=async function(r,n){let o=p(this,l,A).call(this,r),i=n?.from||d(this,X);for(let s of o)i=await i.getDirectoryHandle(s,{create:n?.create});return i};var f=class extends Error{constructor(t,r){super(r),typeof t=="number"?this.code=t:typeof t=="string"&&(this.code=ne[t])}};0&&(module.exports={OpfsAhpFS});
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