| 1 | {"version":3,"names":["_async","require","once","fn","result","resultP","promiseReferenced","waitFor","isAsync","ok","value","error","resolve","reject","Promise","res","rej"],"sources":["../../src/gensync-utils/functional.ts"],"sourcesContent":["import type { Handler } from \"gensync\";\n\nimport { isAsync, waitFor } from \"./async.ts\";\n\nexport function once<R>(fn: () => Handler<R>): () => Handler<R> {\n let result: { ok: true; value: R } | { ok: false; value: unknown };\n let resultP: Promise<R>;\n let promiseReferenced = false;\n return function* () {\n if (!result) {\n if (resultP) {\n promiseReferenced = true;\n return yield* waitFor(resultP);\n }\n\n if (!(yield* isAsync())) {\n try {\n result = { ok: true, value: yield* fn() };\n } catch (error) {\n result = { ok: false, value: error };\n }\n } else {\n let resolve: (result: R) => void, reject: (error: unknown) => void;\n resultP = new Promise((res, rej) => {\n resolve = res;\n reject = rej;\n });\n\n try {\n result = { ok: true, value: yield* fn() };\n // Avoid keeping the promise around\n // now that we have the result.\n resultP = null;\n // We only resolve/reject the promise if it has been actually\n // referenced. If there are no listeners we can forget about it.\n // In the reject case, this avoid uncatchable unhandledRejection\n // events.\n if (promiseReferenced) resolve(result.value);\n } catch (error) {\n result = { ok: false, value: error };\n resultP = null;\n if (promiseReferenced) reject(error);\n }\n }\n }\n\n if (result.ok) return result.value;\n else throw result.value;\n };\n}\n"],"mappings":";;;;;;AAEA,IAAAA,MAAA,GAAAC,OAAA;AAEO,SAASC,IAAIA,CAAIC,EAAoB,EAAoB;EAC9D,IAAIC,MAA8D;EAClE,IAAIC,OAAmB;EACvB,IAAIC,iBAAiB,GAAG,KAAK;EAC7B,OAAO,aAAa;IAClB,IAAI,CAACF,MAAM,EAAE;MACX,IAAIC,OAAO,EAAE;QACXC,iBAAiB,GAAG,IAAI;QACxB,OAAO,OAAO,IAAAC,cAAO,EAACF,OAAO,CAAC;MAChC;MAEA,IAAI,EAAE,OAAO,IAAAG,cAAO,EAAC,CAAC,CAAC,EAAE;QACvB,IAAI;UACFJ,MAAM,GAAG;YAAEK,EAAE,EAAE,IAAI;YAAEC,KAAK,EAAE,OAAOP,EAAE,CAAC;UAAE,CAAC;QAC3C,CAAC,CAAC,OAAOQ,KAAK,EAAE;UACdP,MAAM,GAAG;YAAEK,EAAE,EAAE,KAAK;YAAEC,KAAK,EAAEC;UAAM,CAAC;QACtC;MACF,CAAC,MAAM;QACL,IAAIC,OAA4B,EAAEC,MAAgC;QAClER,OAAO,GAAG,IAAIS,OAAO,CAAC,CAACC,GAAG,EAAEC,GAAG,KAAK;UAClCJ,OAAO,GAAGG,GAAG;UACbF,MAAM,GAAGG,GAAG;QACd,CAAC,CAAC;QAEF,IAAI;UACFZ,MAAM,GAAG;YAAEK,EAAE,EAAE,IAAI;YAAEC,KAAK,EAAE,OAAOP,EAAE,CAAC;UAAE,CAAC;UAGzCE,OAAO,GAAG,IAAI;UAKd,IAAIC,iBAAiB,EAAEM,OAAO,CAACR,MAAM,CAACM,KAAK,CAAC;QAC9C,CAAC,CAAC,OAAOC,KAAK,EAAE;UACdP,MAAM,GAAG;YAAEK,EAAE,EAAE,KAAK;YAAEC,KAAK,EAAEC;UAAM,CAAC;UACpCN,OAAO,GAAG,IAAI;UACd,IAAIC,iBAAiB,EAAEO,MAAM,CAACF,KAAK,CAAC;QACtC;MACF;IACF;IAEA,IAAIP,MAAM,CAACK,EAAE,EAAE,OAAOL,MAAM,CAACM,KAAK,CAAC,KAC9B,MAAMN,MAAM,CAACM,KAAK;EACzB,CAAC;AACH;AAAC","ignoreList":[]} |
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