@ipld/dag-cbor/dist/index.min.js

JS implementation of DAG-CBOR

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Sn=Math.pow(2,7),In=Math.pow(2,14),_n=Math.pow(2,21),Nn=Math.pow(2,28),Cn=Math.pow(2,35),$n=Math.pow(2,42),Mn=Math.pow(2,49),On=Math.pow(2,56),Dn=Math.pow(2,63),zn=function(e){return e<Sn?1:e<In?2:e<_n?3:e<Nn?4:e<Cn?5:e<$n?6:e<Mn?7:e<On?8:e<Dn?9:10},Fn={encode:vn,decode:kn,encodingLength:zn},Rn=Fn,ye=Rn;function me(e,t=0){return[ye.decode(e,t),ye.decode.bytes]}function re(e,t,r=0){return ye.encode(e,t,r),t}function ne(e){return ye.encodingLength(e)}function mr(e,t){let r=t.byteLength,n=ne(e),o=n+ne(r),s=new Uint8Array(o+r);return re(e,s,0),re(r,s,n),s.set(t,o),new oe(e,r,t,s)}function gr(e){let t=ee(e),[r,n]=me(t),[o,s]=me(t.subarray(n)),c=t.subarray(n+s);if(c.byteLength!==o)throw new Error("Incorrect length");return new oe(r,o,c,t)}function xr(e,t){if(e===t)return!0;{let r=t;return e.code===r.code&&e.size===r.size&&r.bytes instanceof Uint8Array&&ar(e.bytes,r.bytes)}}var oe=class{code;size;digest;bytes;constructor(t,r,n,o){this.code=t,this.size=r,this.digest=J(n),this.bytes=J(o)}};function wr(e,t){let{bytes:r,version:n}=e;return n===0?Vn(r,et(e),t??R.encoder):Pn(r,et(e),t??he.encoder)}var br=new WeakMap;function et(e){let t=br.get(e);if(t==null){let r=new Map;return br.set(e,r),r}return t}var xe=class e{code;version;multihash;bytes;"/";constructor(t,r,n,o){this.code=r,this.version=t,this.multihash=n,this.bytes=J(o),this["/"]=this.bytes}get asCID(){return this}get byteOffset(){return this.bytes.byteOffset}get byteLength(){return this.bytes.byteLength}toV0(){switch(this.version){case 0:return this;case 1:{let{code:t,multihash:r}=this;if(t!==ge)throw new Error("Cannot convert a non dag-pb CID to CIDv0");if(r.code!==qn)throw new Error("Cannot convert non sha2-256 multihash CID to CIDv0");return e.createV0(r)}default:throw Error(`Can not convert CID version ${this.version} to version 0. This is a bug please report`)}}toV1(){switch(this.version){case 0:{let{code:t,digest:r}=this.multihash,n=mr(t,r);return e.createV1(this.code,n)}case 1:return this;default:throw Error(`Can not convert CID version ${this.version} to version 1. This is a bug please report`)}}equals(t){return e.equals(this,t)}static equals(t,r){let n=r;return n!=null&&t.code===n.code&&t.version===n.version&&xr(t.multihash,n.multihash)}toString(t){return wr(this,t)}toJSON(){return{"/":wr(this)}}link(){return this}[Symbol.toStringTag]="CID";[Symbol.for("nodejs.util.inspect.custom")](){return`CID(${this.toString()})`}static asCID(t){if(t==null)return null;let r=t;if(r instanceof e)return r;if(r["/"]!=null&&r["/"]===r.bytes||r.asCID===r){let{version:n,code:o,multihash:s,bytes:c}=r;return new e(n,o,s,c??Er(n,o,s.bytes))}else if(r[Gn]===!0){let{version:n,multihash:o,code:s}=r,c=gr(o);return e.create(n,s,c)}else return null}static create(t,r,n){if(typeof r!="number")throw new Error("String codecs are no longer supported");if(!(n.bytes instanceof Uint8Array))throw new Error("Invalid digest");switch(t){case 0:{if(r!==ge)throw new Error(`Version 0 CID must use dag-pb (code: ${ge}) block encoding`);return new e(t,r,n,n.bytes)}case 1:{let o=Er(t,r,n.bytes);return new e(t,r,n,o)}default:throw new Error("Invalid version")}}static createV0(t){return e.create(0,ge,t)}static createV1(t,r){return e.create(1,t,r)}static decode(t){let[r,n]=e.decodeFirst(t);if(n.length!==0)throw new Error("Incorrect length");return r}static decodeFirst(t){let r=e.inspectBytes(t),n=r.size-r.multihashSize,o=ee(t.subarray(n,n+r.multihashSize));if(o.byteLength!==r.multihashSize)throw new Error("Incorrect length");let s=o.subarray(r.multihashSize-r.digestSize),c=new oe(r.multihashCode,r.digestSize,s,o);return[r.version===0?e.createV0(c):e.createV1(r.codec,c),t.subarray(r.size)]}static inspectBytes(t){let r=0,n=()=>{let[H,we]=me(t.subarray(r));return r+=we,H},o=n(),s=ge;if(o===18?(o=0,r=0):s=n(),o!==0&&o!==1)throw new RangeError(`Invalid CID version ${o}`);let c=r,d=n(),p=n(),m=r+p,_=m-c;return{version:o,codec:s,multihashCode:d,digestSize:p,multihashSize:_,size:m}}static parse(t,r){let[n,o]=jn(t,r),s=e.decode(o);if(s.version===0&&t[0]!=="Q")throw Error("Version 0 CID string must not include multibase prefix");return et(s).set(n,t),s}};function jn(e,t){switch(e[0]){case"Q":{let r=t??R;return[R.prefix,r.decode(`${R.prefix}${e}`)]}case R.prefix:{let r=t??R;return[R.prefix,r.decode(e)]}case he.prefix:{let r=t??he;return[he.prefix,r.decode(e)]}case Oe.prefix:{let r=t??Oe;return[Oe.prefix,r.decode(e)]}default:{if(t==null)throw Error("To parse non base32, base36 or base58btc encoded CID multibase decoder must be provided");return[e[0],t.decode(e)]}}}function Vn(e,t,r){let{prefix:n}=r;if(n!==R.prefix)throw Error(`Cannot string encode V0 in ${r.name} encoding`);let o=t.get(n);if(o==null){let s=r.encode(e).slice(1);return t.set(n,s),s}else return o}function Pn(e,t,r){let{prefix:n}=r,o=t.get(n);if(o==null){let s=r.encode(e);return t.set(n,s),s}else return o}var ge=112,qn=18;function Er(e,t,r){let n=ne(e),o=n+ne(t),s=new Uint8Array(o+r.byteLength);return re(e,s,0),re(t,s,n),s.set(r,o),s}var Gn=Symbol.for("@ipld/js-cid/CID");var vr=42;function Ar(e){return e instanceof ArrayBuffer?new Uint8Array(e,0,e.byteLength):e}function Jn(e){if(e.asCID!==e&&e["/"]!==e.bytes)return null;let t=xe.asCID(e);if(!t)return null;let r=new Uint8Array(t.bytes.byteLength+1);return r.set(t.bytes,1),[new u(i.tag,vr),new u(i.bytes,r)]}function Hn(){throw new Error("`undefined` is not supported by the IPLD Data Model and cannot be encoded")}function Kn(e){if(Number.isNaN(e))throw new Error("`NaN` is not supported by the IPLD Data Model and cannot be encoded");if(e===1/0||e===-1/0)throw new Error("`Infinity` and `-Infinity` is not supported by the IPLD Data Model and cannot be encoded");return null}function Xn(e){for(let t of e.keys())if(typeof t!="string"||t.length===0)throw new Error("Non-string Map keys are not supported by the IPLD Data Model and cannot be encoded");return null}var tt={float64:!0,typeEncoders:{Map:Xn,Object:Jn,undefined:Hn,number:Kn}},Wn={...tt,typeEncoders:{...tt.typeEncoders}};function Qn(e){let t=e();if(t[0]!==0)throw new Error("Invalid CID for CBOR tag 42; expected leading 0x00");return xe.decode(t.subarray(1))}var rt={allowIndefinite:!1,coerceUndefinedToNull:!0,allowNaN:!1,allowInfinity:!1,allowBigInt:!0,strict:!0,useMaps:!1,rejectDuplicateMapKeys:!0,tags:{[vr]:Qn}},Yn={...rt,tags:{...rt.tags}},Zn="dag-cbor",eo=113,to=e=>He(e,tt),ro=e=>Ke(Ar(e),rt);return _r(no);})();
return IpldDagCbor}));
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