@randajan/revert/dist/cjs/sync/index.cjs.map

A minimalist utility for running sequential steps with automatic rollback on failure.

{
  "version": 3,
  "sources": ["../../../src/sync/index.js", "../../../src/uni.js", "../../../src/sync/utils.js"],
  "sourcesContent": ["// Converted to sync\r\n\r\nimport { defaultLogFormat, verifyFn, verifyPassMode } from \"../uni\";\r\nimport { revertable, attempt } from \"./utils\";\r\n\r\nexport { revertable, attempt }\r\n\r\nconst wrapWithLogMsg = (passMode, msg, fn)=>{\r\n    return (a1, a2, ...a)=>{\r\n        (passMode === \"omit\" ? a1 : a2)(msg);\r\n        return fn(a1, a2, ...a);\r\n    }\r\n}\r\n\r\nexport class Revertable extends Array {\r\n\r\n    constructor({logger, logFormat, pass=\"omit\"}) {\r\n        super();\r\n\r\n        Object.defineProperty(this, \"passMode\", { value:verifyPassMode(pass) });\r\n\r\n        logger = verifyFn(\"Option logger\", logger);\r\n\r\n        if (logger) {\r\n            logFormat = verifyFn(\"Option logFormat\", logFormat) || defaultLogFormat;\r\n            Object.defineProperty(this, \"logger\", {\r\n                value:(data, kind, dir, s, c)=>logger(logFormat(kind, data, dir, s, c), kind, data, dir, s, c)\r\n            });\r\n        }\r\n    }\r\n    \r\n    push(fwd, rwd) {\r\n        super.push(Object.freeze({\r\n            fwd:verifyFn(\"fwd\", fwd, true),\r\n            rwd:verifyFn(\"rwd\", rwd, true)\r\n        }));\r\n        return this;\r\n    }\r\n\r\n    pushNamed(fwdName, fwd, rwdName, rwd) {\r\n        const { logger, passMode } = this;\r\n        if (!logger) { throw new Error(\"pushNamed(...) requires opt.logger to be provided\"); }\r\n        return this.push(\r\n            wrapWithLogMsg(passMode, fwdName, fwd),\r\n            wrapWithLogMsg(passMode, rwdName, rwd)\r\n        )\r\n    }\r\n\r\n    run(value) {\r\n        const { logger, passMode, length } = this;\r\n        const onError = logger ? (err, dir, s, c)=>logger(err, \"error\", dir, s, c) : undefined;\r\n        const omit = passMode == \"omit\";\r\n\r\n        return revertable(!omit ? value : undefined, length, (value, dir, s, c)=>{\r\n            const { fwd, rwd } = this[s-1];\r\n            const a = [];\r\n            if (!omit) { a.push(value); }\r\n            if (logger) { a.push((msg, kind=\"info\")=>logger(msg, kind, dir, s, c)); }\r\n            const r = (dir ? fwd : rwd)(...a, s, c);\r\n            if (!omit) { return passMode == \"keep\" ? value : r; }\r\n        }, onError);\r\n    }\r\n\r\n}\r\n\r\nexport default (opt)=>new Revertable(opt);\r\n", "\r\n\r\n\r\nconst _passModes = [\"omit\", \"keep\", \"reduce\"];\r\n\r\nexport const verifyFn = (argMsg, fn, req=false)=>{\r\n    if (typeof fn === \"function\") { return fn; }\r\n    if (fn == null && !req) { return; }\r\n    throw new Error(`${argMsg} must be typeof function`);\r\n}\r\n\r\nexport const verifyPassMode = (passMode)=>{\r\n    if (_passModes.includes(passMode)) { return passMode; }\r\n    throw new Error(`Option pass '${passMode}' must be one of '${_passModes.join(\"', '\")}'`);\r\n}\r\n\r\nexport const defaultLogFormat = (kind, data, dir, s, c)=>{\r\n    const symbol = kind === \"error\" ? (dir ? \"\u2500\" : \"\u292B\") : (dir ? \"\u2193\" :\"\u2191\");\r\n    return (`${symbol} ${s}/${c} [${kind}] ${data?.message || data}`);\r\n};\r\n", "// Converted to sync\r\n\r\n\r\nexport const revertable = (value, steps, fn, onError)=>{\r\n    let dir=true, s = 1;\r\n    const r = { status:\"pass\", pass:value };\r\n\r\n    while (s > 0 && s <= steps) {\r\n        try { r.pass = fn(r.pass, dir, s, steps); }\r\n        catch (err) {\r\n            if (onError) { onError(err, dir, s, steps); }\r\n            r.status = dir ? \"undo\" : \"fail\";\r\n            r[r.status] = err;\r\n            r[r.status + \"Step\"] = s;\r\n            if (dir) { dir = false; } else { break; }\r\n        }\r\n        s += dir*2-1;\r\n    }\r\n\r\n    if (r.pass === undefined) { delete r.pass; }\r\n\r\n    return Object.freeze(r);\r\n}\r\n\r\nexport const attempt = (exec, attemptCount=3, delay=2000)=>{\r\n    let a = 1, e;\r\n\r\n    while (true) {\r\n        try { return exec(a); }\r\n        catch(err) { e = err; }\r\n        if (a >= attemptCount) { throw e; }\r\n        a ++;\r\n    }\r\n}"],
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