@getalby/lightning-tools/dist/lightning-tools.umd.js

Collection of helpful building blocks and tools to develop Bitcoin Lightning web apps

!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).LightningTools={})}(this,function(e){"use strict";var t,r,n,o={};var s=function(){if(n)return r;n=1;const{bech32:e,hex:s,utf8:i}=(t||(t=1,function(e){function t(e){if(!Number.isSafeInteger(e))throw new Error(`Wrong integer: ${e}`)}function r(...e){const t=(e,t)=>r=>e(t(r));return{encode:Array.from(e).reverse().reduce((e,r)=>e?t(e,r.encode):r.encode,void 0),decode:e.reduce((e,r)=>e?t(e,r.decode):r.decode,void 0)}}function n(e){return{encode:r=>{if(!Array.isArray(r)||r.length&&"number"!=typeof r[0])throw new Error("alphabet.encode input should be an array of numbers");return r.map(r=>{if(t(r),r<0||r>=e.length)throw new Error(`Digit index outside alphabet: ${r} (alphabet: ${e.length})`);return e[r]})},decode:t=>{if(!Array.isArray(t)||t.length&&"string"!=typeof t[0])throw new Error("alphabet.decode input should be array of strings");return t.map(t=>{if("string"!=typeof t)throw new Error(`alphabet.decode: not string element=${t}`);const r=e.indexOf(t);if(-1===r)throw new Error(`Unknown letter: "${t}". Allowed: ${e}`);return r})}}}function o(e=""){if("string"!=typeof e)throw new Error("join separator should be string");return{encode:t=>{if(!Array.isArray(t)||t.length&&"string"!=typeof t[0])throw new Error("join.encode input should be array of strings");for(let e of t)if("string"!=typeof e)throw new Error(`join.encode: non-string input=${e}`);return t.join(e)},decode:t=>{if("string"!=typeof t)throw new Error("join.decode input should be string");return t.split(e)}}}function s(e,r="="){if(t(e),"string"!=typeof r)throw new Error("padding chr should be string");return{encode(t){if(!Array.isArray(t)||t.length&&"string"!=typeof t[0])throw new Error("padding.encode input should be array of strings");for(let e of t)if("string"!=typeof e)throw new Error(`padding.encode: non-string input=${e}`);for(;t.length*e%8;)t.push(r);return t},decode(t){if(!Array.isArray(t)||t.length&&"string"!=typeof t[0])throw new Error("padding.encode input should be array of strings");for(let e of t)if("string"!=typeof e)throw new Error(`padding.decode: non-string input=${e}`);let n=t.length;if(n*e%8)throw new Error("Invalid padding: string should have whole number of bytes");for(;n>0&&t[n-1]===r;n--)if(!((n-1)*e%8))throw new Error("Invalid padding: string has too much padding");return t.slice(0,n)}}}function i(e){if("function"!=typeof e)throw new Error("normalize fn should be function");return{encode:e=>e,decode:t=>e(t)}}function a(e,r,n){if(r<2)throw new Error(`convertRadix: wrong from=${r}, base cannot be less than 2`);if(n<2)throw new Error(`convertRadix: wrong to=${n}, base cannot be less than 2`);if(!Array.isArray(e))throw new Error("convertRadix: data should be array");if(!e.length)return[];let o=0;const s=[],i=Array.from(e);for(i.forEach(e=>{if(t(e),e<0||e>=r)throw new Error(`Wrong integer: ${e}`)});;){let e=0,t=!0;for(let s=o;s<i.length;s++){const a=i[s],c=r*e+a;if(!Number.isSafeInteger(c)||r*e/r!==e||c-a!==r*e)throw new Error("convertRadix: carry overflow");if(e=c%n,i[s]=Math.floor(c/n),!Number.isSafeInteger(i[s])||i[s]*n+e!==c)throw new Error("convertRadix: carry overflow");t&&(i[s]?t=!1:o=s)}if(s.push(e),t)break}for(let t=0;t<e.length-1&&0===e[t];t++)s.push(0);return s.reverse()}
/*! scure-base - MIT License (c) 2022 Paul Miller (paulmillr.com) */
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${constructor(e){if(this.paymentRequest=e.pr,!this.paymentRequest)throw new Error("Invalid payment request");const t=a(this.paymentRequest);if(!t)throw new Error("Failed to decode payment request");this.paymentHash=t.paymentHash,this.satoshi=t.satoshi,this.timestamp=t.timestamp,this.expiry=t.expiry,this.createdDate=new Date(1e3*this.timestamp),this.expiryDate=this.expiry?new Date(1e3*(this.timestamp+this.expiry)):void 0,this.description=t.description??null,this.verify=e.verify??null,this.preimage=e.preimage??null,this.successAction=e.successAction??null}async isPaid(){if(this.preimage)return this.validatePreimage(this.preimage);if(this.verify)return await this.verifyPayment();throw new Error("Could not verify payment")}validatePreimage(e){if(!e||!this.paymentHash)return!1;try{const t=p(U(i(e)));return this.paymentHash===t}catch{return!1}}async verifyPayment(){try{if(!this.verify)throw new Error("LNURL verify not available");const e=await fetch(this.verify);if(!e.ok)throw new Error(`Verification request failed: ${e.status} ${e.statusText}`);const t=await e.json();return t.preimage&&(this.preimage=t.preimage),t.settled}catch(e){return console.error("Failed to check LNURL-verify",e),!1}}hasExpired(){const{expiryDate:e}=this;return!!e&&e.getTime()<Date.now()}}const _=e=>{if("keysend"!==e.tag)throw new Error("Invalid keysend params");if("OK"!==e.status)throw new Error("Keysend status not OK");if(!e.pubkey)throw new Error("Pubkey does not exist");const t=e.pubkey;let r,n;return e.customData&&e.customData[0]&&(r=e.customData[0].customKey,n=e.customData[0].customValue),{destination:t,customKey:r,customValue:n}};async function L({satoshi:e,comment:t,p:r,e:n,relays:o},s={}){const i=s.nostr||globalThis.nostr;if(!i)throw new Error("nostr option or window.nostr is not available");const a=[["relays",...o],["amount",e.toString()]];r&&a.push(["p",r]),n&&a.push(["e",n]);const c={pubkey:await 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available in current WebLN provider");const o=e.amount||Math.floor(r.value_msat/1e3),s={destination:e.destination,amount:o,customRecords:{7629169:JSON.stringify(r)}};e.customKey&&e.customValue&&(s.customRecords[e.customKey]=e.customValue),await n.enable();return await n.keysend(s)},H=/^((?:[^<>()[\]\\.,;:\s@"]+(?:\.[^<>()[\]\\.,;:\s@"]+)*)|(?:".+"))@((?:\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(?:(?:[a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/,j="https://api.getalby.com/lnurl";class K{constructor(e){this.storage=e||{}}getItem(e){return this.storage[e]}setItem(e,t){this.storage[e]=t}}const C=e=>{const t=e.replace("L402","").replace("LSAT","").trim(),r={},n=/(\w+)=("([^"]*)"|'([^']*)'|([^,]*))/g;let o;for(;null!==(o=n.exec(t));)r[o[1]]=o[3]||o[4]||o[5];return r},O=new K,F=async e=>{const t="https://getalby.com/api/rates/"+e.toLowerCase()+".json",r=await fetch(t);if(!r.ok)throw new Error(`Failed to fetch rate: ${r.status} ${r.statusText}`);return(await r.json()).rate_float/1e8},V=async({satoshi:e,currency:t})=>{const r=await F(t);return Number(e)*r};e.DEFAULT_PROXY=j,e.Invoice=$,e.LN_ADDRESS_REGEX=H,e.LightningAddress=class{constructor(e,t){this.address=e,this.options={proxy:j},this.options=Object.assign(this.options,t),this.parse(),this.webln=this.options.webln}parse(){const e=H.exec(this.address.toLowerCase());e&&(this.username=e[1],this.domain=e[2])}getWebLN(){return this.webln||globalThis.webln}async fetch(){return this.options.proxy?this.fetchWithProxy():this.fetchWithoutProxy()}async fetchWithProxy(){const e=await fetch(`${this.options.proxy}/lightning-address-details?${new URLSearchParams({ln:this.address}).toString()}`);if(!e.ok)throw new Error(`Failed to fetch lnurl info: ${e.status} ${e.statusText}`);const t=await e.json();await this.parseLnUrlPayResponse(t.lnurlp),this.parseKeysendResponse(t.keysend),this.parseNostrResponse(t.nostr)}async fetchWithoutProxy(){this.domain&&this.username&&await Promise.all([this.fetchLnurlData(),this.fetchKeysendData(),this.fetchNostrData()])}async fetchLnurlData(){const e=await fetch(this.lnurlpUrl());if(e.ok){const t=await e.json();await this.parseLnUrlPayResponse(t)}}async fetchKeysendData(){const e=await fetch(this.keysendUrl());if(e.ok){const t=await e.json();this.parseKeysendResponse(t)}}async fetchNostrData(){const e=await fetch(this.nostrUrl());if(e.ok){const t=await e.json();this.parseNostrResponse(t)}}lnurlpUrl(){return`https://${this.domain}/.well-known/lnurlp/${this.username}`}keysendUrl(){return`https://${this.domain}/.well-known/keysend/${this.username}`}nostrUrl(){return`https://${this.domain}/.well-known/nostr.json?name=${this.username}`}async generateInvoice(e){let t;if(this.options.proxy){const r=await fetch(`${this.options.proxy}/generate-invoice?${new URLSearchParams({ln:this.address,...e}).toString()}`);if(!r.ok)throw new Error(`Failed to generate invoice: ${r.status} ${r.statusText}`);t=(await r.json()).invoice}else{if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");if(!this.lnurlpData.callback||!T(this.lnurlpData.callback))throw new Error("Valid callback does not exist in lnurlpData");const r=new URL(this.lnurlpData.callback);r.search=new URLSearchParams(e).toString();const n=await fetch(r.toString());if(!n.ok)throw new Error(`Failed to generate invoice: ${n.status} ${n.statusText}`);t=await n.json()}const r=t&&t.pr&&t.pr.toString();if(!r)throw new Error("Invalid pay service invoice");const n={pr:r};if(t&&t.verify&&(n.verify=t.verify.toString()),t&&t.successAction&&"object"==typeof t.successAction){const{tag:e,message:r,description:o,url:s}=t.successAction;"message"===e?n.successAction={tag:e,message:r}:"url"===e&&(n.successAction={tag:e,description:o,url:s})}return new $(n)}async requestInvoice(e){if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");const t=1e3*e.satoshi,{commentAllowed:r,min:n,max:o}=this.lnurlpData;if(!P({amount:t,min:n,max:o}))throw new Error("Invalid amount");if(e.comment&&r&&r>0&&e.comment.length>r)throw new Error(`The comment length must be ${r} characters or fewer`);const s={amount:t.toString()};return e.comment&&(s.comment=e.comment),e.payerdata&&(s.payerdata=JSON.stringify(e.payerdata)),this.generateInvoice(s)}async boost(e,t=0){if(!this.keysendData)throw new Error("No keysendData available. Please call fetch() first.");const{destination:r,customKey:n,customValue:o}=this.keysendData,s=this.getWebLN();if(!s)throw new Error("WebLN not available");return B({destination:r,customKey:n,customValue:o,amount:t,boost:e},{webln:s})}async zapInvoice({satoshi:e,comment:t,relays:r,e:n},o={}){if(!this.lnurlpData)throw new Error("No lnurlpData available. Please call fetch() first.");if(!this.nostrPubkey)throw new Error("Nostr Pubkey is missing");const s=this.nostrPubkey,i=1e3*e,{allowsNostr:a,min:c,max:h}=this.lnurlpData;if(!P({amount:i,min:c,max:h}))throw new Error("Invalid amount");if(!a)throw new Error("Your provider does not support zaps");const l=await L({satoshi:i,comment:t,p:s,e:n,relays:r},o),u={amount:i.toString(),nostr:JSON.stringify(l)};return await this.generateInvoice(u)}async zap(e,t={}){const r=this.zapInvoice(e,t),n=this.getWebLN();if(!n)throw new Error("WebLN not available");await n.enable();return n.sendPayment((await r).paymentRequest)}async parseLnUrlPayResponse(e){e&&(this.lnurlpData=await W(e))}parseKeysendResponse(e){e&&(this.keysendData=_(e))}parseNostrResponse(e){e&&([this.nostrData,this.nostrPubkey,this.nostrRelays]=S(e,this.username))}},e.MemoryStorage=K,e.NoStorage=class{constructor(e){}getItem(e){return null}setItem(e,t){}},e.decodeInvoice=a,e.fetchWithL402=async(e,t,r)=>{r||(r={});const n=r.headerKey||"L402",o=r.webln||globalThis.webln;if(!o)throw new Error("WebLN is missing");const s=r.store||O;t||(t={}),t.cache="no-store",t.mode="cors",t.headers||(t.headers={});const i=s.getItem(e);if(i){const r=JSON.parse(i);return t.headers.Authorization=`${n} ${r.token}:${r.preimage}`,await fetch(e,t)}t.headers["Accept-Authenticate"]=n;const a=await fetch(e,t),c=a.headers.get("www-authenticate");if(!c)return a;const h=C(c),l=h.token||h.macaroon,u=h.invoice;await o.enable();const f=await o.sendPayment(u);return s.setItem(e,JSON.stringify({token:l,preimage:f.preimage})),t.headers.Authorization=`${n} ${l}:${f.preimage}`,await fetch(e,t)},e.fromHexString=i,e.generateZapEvent=L,e.getEventHash=D,e.getFiatBtcRate=F,e.getFiatValue=V,e.getFormattedFiatValue=async({satoshi:e,currency:t,locale:r})=>{r||(r="en");return(await V({satoshi:e,currency:t})).toLocaleString(r,{style:"currency",currency:t})},e.getSatoshiValue=async({amount:e,currency:t})=>{const r=await F(t);return Math.floor(Number(e)/r)},e.isUrl=T,e.isValidAmount=P,e.parseKeysendResponse=_,e.parseL402=C,e.parseLnUrlPayResponse=W,e.parseNostrResponse=S,e.sendBoostagram=B,e.serializeEvent=I,e.validateEvent=N});
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