@langchain/core
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Core LangChain.js abstractions and schemas
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{"version":3,"file":"duplex.cjs","names":["_objectKeys","hasOwnProperty","escapePathComponent","_deepClone"],"sources":["../../../../src/utils/fast-json-patch/src/duplex.ts"],"sourcesContent":["// @ts-nocheck\n\n// Inlined because of ESM import issues\n\n/*!\n * https://github.com/Starcounter-Jack/JSON-Patch\n * (c) 2013-2021 Joachim Wester\n * MIT license\n */\nimport {\n _deepClone,\n _objectKeys,\n escapePathComponent,\n hasOwnProperty,\n} from \"./helpers.js\";\nimport { applyPatch, Operation } from \"./core.js\";\n\nexport interface Observer<T> {\n object: T;\n patches: Operation[];\n unobserve: () => void;\n callback: (patches: Operation[]) => void;\n}\n\nvar beforeDict = new WeakMap();\n\nclass Mirror {\n obj: any;\n observers: Map<Function, ObserverInfo> = new Map();\n value: Object | Array<any>;\n\n constructor(obj: Object) {\n this.obj = obj;\n }\n}\n\nclass ObserverInfo {\n callback: Function;\n observer: ObserverInfo;\n\n constructor(callback: Function, observer: ObserverInfo) {\n this.callback = callback;\n this.observer = observer;\n }\n}\n\nfunction getMirror(obj: Object): Mirror {\n return beforeDict.get(obj);\n}\n\nfunction getObserverFromMirror(mirror: Mirror, callback): ObserverInfo {\n return mirror.observers.get(callback);\n}\n\nfunction removeObserverFromMirror(mirror: Mirror, observer): void {\n mirror.observers.delete(observer.callback);\n}\n\n/**\n * Detach an observer from an object\n */\nexport function unobserve<T>(root: T, observer: Observer<T>) {\n observer.unobserve();\n}\n\n/**\n * Observes changes made to an object, which can then be retrieved using generate\n */\nexport function observe<T>(\n obj: Object | Array<T>,\n callback?: (patches: Operation[]) => void\n): Observer<T> {\n var patches = [];\n var observer;\n var mirror = getMirror(obj);\n\n if (!mirror) {\n mirror = new Mirror(obj);\n beforeDict.set(obj, mirror);\n } else {\n const observerInfo = getObserverFromMirror(mirror, callback);\n observer = observerInfo && observerInfo.observer;\n }\n\n if (observer) {\n return observer;\n }\n\n observer = {};\n\n mirror.value = _deepClone(obj);\n\n if (callback) {\n observer.callback = callback;\n observer.next = null;\n\n var dirtyCheck = () => {\n generate(observer);\n };\n var fastCheck = () => {\n clearTimeout(observer.next);\n observer.next = setTimeout(dirtyCheck);\n };\n if (typeof window !== \"undefined\") {\n //not Node\n window.addEventListener(\"mouseup\", fastCheck);\n window.addEventListener(\"keyup\", fastCheck);\n window.addEventListener(\"mousedown\", fastCheck);\n window.addEventListener(\"keydown\", fastCheck);\n window.addEventListener(\"change\", fastCheck);\n }\n }\n observer.patches = patches;\n observer.object = obj;\n\n observer.unobserve = () => {\n generate(observer);\n clearTimeout(observer.next);\n removeObserverFromMirror(mirror, observer);\n\n if (typeof window !== \"undefined\") {\n window.removeEventListener(\"mouseup\", fastCheck);\n window.removeEventListener(\"keyup\", fastCheck);\n window.removeEventListener(\"mousedown\", fastCheck);\n window.removeEventListener(\"keydown\", fastCheck);\n window.removeEventListener(\"change\", fastCheck);\n }\n };\n\n mirror.observers.set(callback, new ObserverInfo(callback, observer));\n\n return observer;\n}\n\n/**\n * Generate an array of patches from an observer\n */\nexport function generate<T>(\n observer: Observer<Object>,\n invertible = false\n): Operation[] {\n var mirror = beforeDict.get(observer.object);\n\n _generate(mirror.value, observer.object, observer.patches, \"\", invertible);\n if (observer.patches.length) {\n applyPatch(mirror.value, observer.patches);\n }\n var temp = observer.patches;\n if (temp.length > 0) {\n observer.patches = [];\n if (observer.callback) {\n observer.callback(temp);\n }\n }\n return temp;\n}\n\n// Dirty check if obj is different from mirror, generate patches and update mirror\nfunction _generate(mirror, obj, patches, path, invertible) {\n if (obj === mirror) {\n return;\n }\n\n if (typeof obj.toJSON === \"function\") {\n obj = obj.toJSON();\n }\n\n var newKeys = _objectKeys(obj);\n var oldKeys = _objectKeys(mirror);\n var changed = false;\n var deleted = false;\n\n //if ever \"move\" operation is implemented here, make sure this test runs OK: \"should not generate the same patch twice (move)\"\n\n for (var t = oldKeys.length - 1; t >= 0; t--) {\n var key = oldKeys[t];\n var oldVal = mirror[key];\n\n if (\n hasOwnProperty(obj, key) &&\n !(\n obj[key] === undefined &&\n oldVal !== undefined &&\n Array.isArray(obj) === false\n )\n ) {\n var newVal = obj[key];\n\n if (\n typeof oldVal == \"object\" &&\n oldVal != null &&\n typeof newVal == \"object\" &&\n newVal != null &&\n Array.isArray(oldVal) === Array.isArray(newVal)\n ) {\n _generate(\n oldVal,\n newVal,\n patches,\n path + \"/\" + escapePathComponent(key),\n invertible\n );\n } else {\n if (oldVal !== newVal) {\n changed = true;\n if (invertible) {\n patches.push({\n op: \"test\",\n path: path + \"/\" + escapePathComponent(key),\n value: _deepClone(oldVal),\n });\n }\n patches.push({\n op: \"replace\",\n path: path + \"/\" + escapePathComponent(key),\n value: _deepClone(newVal),\n });\n }\n }\n } else if (Array.isArray(mirror) === Array.isArray(obj)) {\n if (invertible) {\n patches.push({\n op: \"test\",\n path: path + \"/\" + escapePathComponent(key),\n value: _deepClone(oldVal),\n });\n }\n patches.push({\n op: \"remove\",\n path: path + \"/\" + escapePathComponent(key),\n });\n deleted = true; // property has been deleted\n } else {\n if (invertible) {\n patches.push({ op: \"test\", path, value: mirror });\n }\n patches.push({ op: \"replace\", path, value: obj });\n changed = true;\n }\n }\n\n if (!deleted && newKeys.length == oldKeys.length) {\n return;\n }\n\n for (var t = 0; t < newKeys.length; t++) {\n var key = newKeys[t];\n if (!hasOwnProperty(mirror, key) && obj[key] !== undefined) {\n patches.push({\n op: \"add\",\n path: path + \"/\" + escapePathComponent(key),\n value: _deepClone(obj[key]),\n });\n }\n }\n}\n/**\n * Create an array of patches from the differences in two objects\n */\nexport function compare(\n tree1: Object | Array<any>,\n tree2: Object | Array<any>,\n invertible = false\n): Operation[] {\n var patches = [];\n _generate(tree1, tree2, patches, \"\", invertible);\n return patches;\n}\n"],"mappings":";;;;;;;;AA8JA,SAAS,UAAU,QAAQ,KAAK,SAAS,MAAM,YAAY;CACzD,IAAI,QAAQ,QACV;CAGF,IAAI,OAAO,IAAI,WAAW,YACxB,MAAM,IAAI,OAAO;CAGnB,IAAI,UAAUA,gBAAAA,YAAY,GAAG;CAC7B,IAAI,UAAUA,gBAAAA,YAAY,MAAM;CAEhC,IAAI,UAAU;CAId,KAAK,IAAI,IAAI,QAAQ,SAAS,GAAG,KAAK,GAAG,KAAK;EAC5C,IAAI,MAAM,QAAQ;EAClB,IAAI,SAAS,OAAO;EAEpB,IACEC,gBAAAA,eAAe,KAAK,GAAG,KACvB,EACE,IAAI,SAAS,KAAA,KACb,WAAW,KAAA,KACX,MAAM,QAAQ,GAAG,MAAM,QAEzB;GACA,IAAI,SAAS,IAAI;GAEjB,IACE,OAAO,UAAU,YACjB,UAAU,QACV,OAAO,UAAU,YACjB,UAAU,QACV,MAAM,QAAQ,MAAM,MAAM,MAAM,QAAQ,MAAM,GAE9C,UACE,QACA,QACA,SACA,OAAO,MAAMC,gBAAAA,oBAAoB,GAAG,GACpC,UACF;QAEA,IAAI,WAAW,QAAQ;IAErB,IAAI,YACF,QAAQ,KAAK;KACX,IAAI;KACJ,MAAM,OAAO,MAAMA,gBAAAA,oBAAoB,GAAG;KAC1C,OAAOC,gBAAAA,WAAW,MAAM;IAC1B,CAAC;IAEH,QAAQ,KAAK;KACX,IAAI;KACJ,MAAM,OAAO,MAAMD,gBAAAA,oBAAoB,GAAG;KAC1C,OAAOC,gBAAAA,WAAW,MAAM;IAC1B,CAAC;GACH;EAEJ,OAAO,IAAI,MAAM,QAAQ,MAAM,MAAM,MAAM,QAAQ,GAAG,GAAG;GACvD,IAAI,YACF,QAAQ,KAAK;IACX,IAAI;IACJ,MAAM,OAAO,MAAMD,gBAAAA,oBAAoB,GAAG;IAC1C,OAAOC,gBAAAA,WAAW,MAAM;GAC1B,CAAC;GAEH,QAAQ,KAAK;IACX,IAAI;IACJ,MAAM,OAAO,MAAMD,gBAAAA,oBAAoB,GAAG;GAC5C,CAAC;GACD,UAAU;EACZ,OAAO;GACL,IAAI,YACF,QAAQ,KAAK;IAAE,IAAI;IAAQ;IAAM,OAAO;GAAO,CAAC;GAElD,QAAQ,KAAK;IAAE,IAAI;IAAW;IAAM,OAAO;GAAI,CAAC;EAElD;CACF;CAEA,IAAI,CAAC,WAAW,QAAQ,UAAU,QAAQ,QACxC;CAGF,KAAK,IAAI,IAAI,GAAG,IAAI,QAAQ,QAAQ,KAAK;EACvC,IAAI,MAAM,QAAQ;EAClB,IAAI,CAACD,gBAAAA,eAAe,QAAQ,GAAG,KAAK,IAAI,SAAS,KAAA,GAC/C,QAAQ,KAAK;GACX,IAAI;GACJ,MAAM,OAAO,MAAMC,gBAAAA,oBAAoB,GAAG;GAC1C,OAAOC,gBAAAA,WAAW,IAAI,IAAI;EAC5B,CAAC;CAEL;AACF;;;;AAIA,SAAgB,QACd,OACA,OACA,aAAa,OACA;CACb,IAAI,UAAU,CAAC;CACf,UAAU,OAAO,OAAO,SAAS,IAAI,UAAU;CAC/C,OAAO;AACT"}