[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10},"actionData","errors","root",{"_154":155,"_156":157},"routes/_app.x.$handle.$name",{"_16":17,"_20":21,"_82":65,"_83":84,"_63":-7,"_85":-5,"_13":86,"_87":88,"_11":89,"_90":91,"_92":93,"_94":-5,"_95":-5,"_96":-5,"_97":62,"_98":99,"_100":62,"_101":-5,"_102":-5,"_103":104},"routes/_app.x.$handle.$name.search.$(branch)",{"_11":12,"_13":14,"_15":-5,"_16":17},"files",[],"project",{"_18":19,"_20":21,"_22":23,"_24":-5,"_25":26,"_27":28,"_29":28,"_30":-5,"_31":-5,"_32":33,"_34":-5,"_35":26,"_36":-5,"_37":-5,"_38":39,"_40":41,"_42":-5,"_43":-5,"_44":-5,"_45":-5,"_46":47,"_48":47,"_49":50,"_51":50,"_52":50,"_53":47,"_54":47,"_55":56,"_57":58,"_59":60,"_61":62},"query","handle","postpostscript","id","f24f84c0-275f-11f0-86ff-569c3dd06744","name","interruptibleChain","createdAt",["D",1746195348913],"deletedAt","legacyEnvVars",true,"privacy","public","httpPrivacy","description","imageUrl","userId","4bfb99a9-2008-40e0-bacb-7c7d84227cee","pinnedFileId","pinPreview","pinMigrated","screenshotVersion","likeCount",0,"orgId","1073b191-f665-405d-9530-545465c93575","tursoName","tursoHostname","tursoMeasuredAt","pinned","userPerm","r","valPerm","blobPerm","rw","emailPerm","sqlitePerm","projectPerm","telemetryPerm","user",{"_16":17,"_81":77},"org",{"_16":17,"_75":-5,"_76":77,"_32":33,"_78":79,"_80":62},"branch",{"_63":64,"_20":65,"_18":66,"_67":19,"_68":-5,"_69":-5,"_70":-5,"_71":-5,"_72":-5,"_73":21,"_74":17},"isOwned",false,"version",3,"main","f24fd81c-275f-11f0-86ff-569c3dd06744","projectId","forkedBranchId","forkedBranchVersion","forkedProjectPrivacy","forkedProjectId","forkedProjectOrgId","projectName","userHandle","displayName","avatar","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2ltYWdlcy5jbGVyay5kZXYvdXBsb2FkZWQvaW1nXzJjdlhaRXl0WXVNSlhZcWU0ckI2c1BOMjNhQSJ9","tier","free","canRestrictVals","profileImageUrl","branchName","path","","adoptOrgId",{"_18":19,"_20":21,"_22":150,"_24":-5,"_25":26,"_27":28,"_29":28,"_30":-5,"_31":-5,"_32":33,"_34":-5,"_35":26,"_36":-5,"_37":-5,"_38":39,"_40":41,"_42":-5,"_43":-5,"_44":-5,"_45":-5,"_46":47,"_48":47,"_49":50,"_51":50,"_52":50,"_53":47,"_54":47,"_55":151,"_57":152,"_59":153,"_61":62},"tree",[141,142],[141,142],"counts",{"_131":39,"_132":127,"_133":39,"_134":135,"_136":137},"contents",[105,106],"file","upstreamProject","upstreamBranch","emptyEnvVars","flags",[],"hasHttpFiles","grants","orgs","customDomains",{},{"_18":124,"_20":125,"_109":126,"_111":-5,"_112":66,"_113":127,"_114":26,"_22":128,"_63":39,"_117":94,"_119":129,"_121":62,"_122":-5,"_83":130},{"_18":107,"_20":108,"_109":110,"_111":-5,"_112":66,"_113":64,"_114":26,"_22":115,"_63":116,"_117":118,"_119":120,"_121":62,"_122":-5,"_83":123},"f25ea5c2-275f-11f0-86ff-569c3dd06744","main.tsx","fileId","f25260be-275f-11f0-86ff-569c3dd06744","parentId","branchId","branchVersion","latest",["D",1736392468981],2,"fileType","script","content","import type { MaybePromise } from \"https://esm.town/v/postpostscript/typeUtils\";\n\nexport function $chain(method: InterruptibleChainMethod): InterruptibleChain;\nexport function $chain(): InterruptibleChain;\nexport function $chain(\n method?: InterruptibleChainMethod,\n): InterruptibleChain | InterruptibleChain {\n if (!method) {\n const chain = $chain(() => {\n // never called\n return undefined;\n });\n chain.index = -1;\n return chain;\n }\n return new InterruptibleChain(method);\n}\n\nexport class InterruptibleChain {\n index = 0;\n parent: InterruptibleChain | undefined;\n method: InterruptibleChainMethod;\n\n constructor(method: InterruptibleChainMethod) {\n this.method = method;\n }\n\n then(method: InterruptibleChainMethod | InterruptibleChain): InterruptibleChain {\n let _method = typeof method === \"object\" ? subchainMethod(method) : method;\n const child = new InterruptibleChain(_method);\n if (this.index === -1) {\n return child;\n }\n child.index = this.index + 1;\n child.parent = this;\n return child;\n }\n\n init(state: InterruptibleChainState = {\n index: 0,\n value: undefined,\n }) {\n return new InterruptibleChainHandle(this, state);\n }\n}\n\nexport class InterruptibleChainHandle {\n state: InterruptibleChainState;\n chain: InterruptibleChain;\n interrupt: Interrupt | undefined = undefined;\n\n constructor(chain: InterruptibleChain, state: InterruptibleChainState = {\n index: 0,\n value: undefined,\n }) {\n this.chain = chain;\n this.state = state;\n }\n\n get done() {\n return this.state.index === this.chain.index + 1;\n }\n\n async advance(): Promise> {\n if (this.done) {\n throw new Error(\"chain is complete\");\n }\n this.interrupt = undefined;\n let chain: InterruptibleChain = this.chain;\n while (this.state.index < chain.index) {\n chain = chain.parent!;\n }\n let value: T | Interrupt;\n try {\n value = await chain.method(this.state.value, (reason, intermediateState) => {\n return new Interrupt(reason, chain, intermediateState);\n }, this.state.intermediateState);\n } catch (err) {\n if (err instanceof Interrupt) {\n value = err;\n } else {\n value = new Interrupt(err, chain);\n }\n }\n if (value instanceof Interrupt) {\n this.interrupt = value;\n if (value.intermediateState !== undefined) {\n this.state.intermediateState = value.intermediateState;\n } else if (\"intermediateState\" in this.state) {\n delete this.state.intermediateState;\n }\n return this;\n }\n this.state.value = value;\n if (\"intermediateState\" in this.state) {\n delete this.state.intermediateState;\n }\n this.state.index += 1;\n return this;\n }\n\n async untilDone(): Promise<\n {\n done: true;\n value: T;\n handle: InterruptibleChainHandle;\n } | {\n done: false;\n interrupt: Interrupt;\n handle: InterruptibleChainHandle;\n }\n > {\n this.interrupt = undefined;\n while (!(this.done || this.interrupt)) {\n await this.advance();\n }\n if (this.interrupt) {\n return {\n done: false,\n interrupt: this.interrupt,\n handle: this,\n };\n }\n return {\n done: true,\n value: this.state.value,\n handle: this,\n };\n }\n}\n\nexport class Interrupt {\n reason: T;\n chain: InterruptibleChain;\n intermediateState: IntermediateState | undefined;\n\n constructor(reason: T, chain: InterruptibleChain, intermediateState?: IntermediateState) {\n this.reason = reason;\n this.chain = chain;\n this.intermediateState = intermediateState;\n }\n}\n\nexport type IntermediateState = any;\n\nexport type InterruptibleChainMethod = (\n result: P,\n interrupt: (reason: R, intermediateState?: IntermediateState) => Interrupt,\n intermediateState?: IntermediateState,\n) => MaybePromise;\n\nexport type InterruptibleChainState = {\n index: number;\n value: any;\n intermediateState?: IntermediateState;\n};\n\ntype SubchainState = InterruptibleChainState | undefined;\n\nexport function subchainMethod(chain: InterruptibleChain): InterruptibleChainMethod {\n return async (previous, interrupt, intermediateState: SubchainState) => {\n const status = await chain.init(\n intermediateState || {\n index: 0,\n value: previous,\n },\n ).untilDone();\n\n if (status.done) {\n return status.value;\n } else {\n return interrupt(\n `subchain interrupted: ${status.interrupt.reason}`,\n status.handle.state,\n );\n }\n };\n}\n\nexport function join[]>(\n ...chains: Chains\n): InterruptibleChain> {\n let chain: InterruptibleChain = $chain((previous) => [[], previous]);\n\n for (const subchain of chains) {\n chain = chain.then(async ([result, previous], interrupt, intermediateState: SubchainState) => {\n const value = await subchainMethod(subchain)(undefined, interrupt, intermediateState);\n\n if (value instanceof Interrupt) {\n return value;\n }\n\n return [[\n ...result,\n value,\n ], undefined];\n });\n }\n\n chain = chain.then(([result, _]) => result);\n\n return chain as InterruptibleChain>;\n}\n\nexport type InterruptibleChainJoinResult[], Return extends any[] = []> =\n List extends [infer Chain extends InterruptibleChain, ...infer Rest extends InterruptibleChain[]]\n ? InterruptibleChainJoinResult<\n Rest,\n [...Return, (Chain extends InterruptibleChain ? Awaited : never)]\n >\n : Return;\n\nexport function append[]>(\n ...chains: Chains\n): InterruptibleChain> {\n let chain = chains[0];\n\n for (const next of chains) {\n chain = chain.then(next);\n }\n\n return chain;\n}\n\nexport type AppendResult[]> = List extends\n [infer Chain extends InterruptibleChain]\n ? (Chain extends InterruptibleChain ? Awaited : never)\n : (List extends [any, ...infer Rest extends InterruptibleChain[]] ? AppendResult<\n Rest\n >\n : never);","deleted","label",[108],"f25265aa-275f-11f0-86ff-569c3dd06744","README.md","f2526636-275f-11f0-86ff-569c3dd06744",1,["D",1736214381259],"# interruptibleChain: simple interface for pausing and resuming execution chains\n\n[⚠️ Moved to GitHub ⚠️](https://github.com/postpostscript/chain)\n\n```ts\nimport { $chain } from \"https://esm.town/v/postpostscript/interruptibleChain\";\n\nconst multiply = $chain()\n .then(() => 1)\n .then((x) => x + 3)\n .then(async (x) => {\n await new Promise((resolve) => setTimeout(resolve, 1000));\n return x * 2;\n });\n\nconst handle = multiply.init();\nconsole.log(await handle.untilDone());\n// { done: true, value: 8, handle: InterruptibleChainHandle { ... } }\n\nconst handle2 = multiply.init({\n index: 2,\n value: 4,\n});\nawait handle2.advance();\nconsole.log(handle2.done, handle2.state);\n// true { index: 3, value: 8 }\n\n/**** Interrupts ****/\n\nconst handle3 = $chain().then(() => {\n throw new Error(\"failed\");\n}).init();\nawait handle3.advance();\nconsole.log(handle3.done, handle3.interrupt);\n// false Interrupt { reason: Error: failed, chain: InterruptibleChain { index: 0 } }\n\nconsole.log(await handle3.untilDone());\n// { done: false, interrupt: Interrupt { ... }, handle: InterruptibleChainHandle { ... } }\n\nconst handle4 = $chain().then((_, interrupt) => {\n return interrupt(\"call me later\");\n}).init();\nawait handle4.advance()\nconsole.log(handle4.done, handle4.interrupt);\n// false Interrupt { reason: \"call me later\", chain: InterruptibleChain { index: 0 } }\n```\n\nMigrated from folder: Archive/interruptibleChain",[125],"pulls","branches","forks","envVars",{"_138":39,"_140":39},"connections",{"_138":39,"_139":39},"count","unfilledCount","emptyCount",{"_18":124,"_20":125,"_109":126,"_111":-5,"_112":66,"_113":127,"_114":26,"_22":147,"_63":39,"_117":94,"_119":129,"_121":62,"_122":-5,"_144":148,"_83":149},{"_18":107,"_20":108,"_109":110,"_111":-5,"_112":66,"_113":64,"_114":26,"_22":143,"_63":116,"_117":118,"_119":120,"_121":62,"_122":-5,"_144":145,"_83":146},["D",1736392468981],"children",[],[108],["D",1736214381259],[],[125],["D",1746195348913],{"_16":17,"_81":77},{"_16":17,"_75":-5,"_76":77,"_32":33,"_78":79,"_80":62},{"_63":64,"_20":65,"_18":66,"_67":19,"_68":-5,"_69":-5,"_70":-5,"_71":-5,"_72":-5,"_73":21,"_74":17},"ctx",{"_55":-5,"_102":187,"_188":189,"_190":191,"_192":62,"_193":62,"_194":62,"_195":26,"_196":-5,"_197":-7,"_198":-7,"_199":39,"_200":62,"_201":62,"_202":-5,"_203":62,"_204":62,"_205":62,"_206":-5},"ENV",{"_158":159,"_160":161,"_162":65,"_163":164,"_165":166,"_167":168,"_169":170,"_171":172,"_173":174,"_175":176,"_177":178,"_179":180,"_181":182,"_183":184,"_185":186},"REACT_APP_SENTRY_DSN","https://586020d86f05489db63a554690acf1e9@o1398359.ingest.sentry.io/6724499","RENDER_GIT_COMMIT","e87eb04e707cf64e7e532c8e8ec395f209e17f15","RENDER_GIT_BRANCH","POSTHOG_API_TOKEN","phc_nmoyuAkStEZuUp69rYlg1DZgrIt19Gx0Y4Hwf8tGgJP","POSTHOG_API_HOST","https://wart.val.town","WEB_API_TEMPLATE","https://{val}.web.val.run","APP_URL","https://www.val.town","MODULE_URL","https://esm.town","VANITY_WEB_API_TEMPLATE","https://{label}.val.run/","DENOLS_URL","https://lsp.val.town","NODE_ENV","production","CLOUDFLARE_TURNSTILE_SITE_KEY","0x4AAAAAACtaIZJH7s9rBMZ6","GOOGLE_CLIENT_ID","875989696899-jtsqkhlbdv5jrlsk8631p7ipjg3c6o62.apps.googleusercontent.com","STRIPE_PUBLISHABLE_KEY","pk_live_51N2zvWEpZTTLipIkVEwXrUG9AT0yeOOEYxszarZT1jpsZV58Ly6wlg3SltZpHN26CUalOBmUSY7adQRQiSkCZz2500qSXNkf8Y","API_URL","https://api.val.town",[],"preferencesKeybindings","default","preferencesTheme","light","preferencesFixers","preferencesCopilot","preferencesSelectionAi","preferencesCloseBrackets","preferencesChatPanelState","preferencesDprint","preferencesDenofmt","notificationCount","flagDenols","isBusinessOrgMember","businessOrgHandle","isBusinessOrgAdmin","isHigherTownieTier","navCollapsed","currentOrgId"]

Search