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{"version":3,"sources":["../src/format.ts","../src/invariant.ts"],"sourcesContent":["const POSITIONALS_EXP = /(%?)(%([sdijo]))/g\n\nfunction serializePositional(positional: any, flag: string): any {\n switch (flag) {\n // Strings.\n case 's':\n return positional\n\n // Digits.\n case 'd':\n case 'i':\n return Number(positional)\n\n // JSON.\n case 'j':\n return JSON.stringify(positional)\n\n // Objects.\n case 'o': {\n // Preserve stings to prevent extra quotes around them.\n if (typeof positional === 'string') {\n return positional\n }\n\n const json = JSON.stringify(positional)\n\n // If the positional isn't serializable, return it as-is.\n if (json === '{}' || json === '[]' || /^\\[object .+?\\]$/.test(json)) {\n return positional\n }\n\n return json\n }\n }\n}\n\nexport function format(message: string, ...positionals: any[]): string {\n if (positionals.length === 0) {\n return message\n }\n\n let positionalIndex = 0\n let formattedMessage = message.replace(\n POSITIONALS_EXP,\n (match, isEscaped, _, flag) => {\n const positional = positionals[positionalIndex]\n const value = serializePositional(positional, flag)\n\n if (!isEscaped) {\n positionalIndex++\n return value\n }\n\n return match\n }\n )\n\n // Append unresolved positionals to string as-is.\n if (positionalIndex < positionals.length) {\n formattedMessage += ` ${positionals.slice(positionalIndex).join(' ')}`\n }\n\n formattedMessage = formattedMessage.replace(/%{2,2}/g, '%')\n\n return formattedMessage\n}\n","import { format } from './format'\n\nconst STACK_FRAMES_TO_IGNORE = 2\n\n/**\n * Remove the \"outvariant\" package trace from the given error.\n * This scopes down the error stack to the relevant parts\n * when used in other applications.\n */\nfunction cleanErrorStack(error: Error): void {\n if (!error.stack) {\n return\n }\n\n const nextStack = error.stack.split('\\n')\n nextStack.splice(1, STACK_FRAMES_TO_IGNORE)\n error.stack = nextStack.join('\\n')\n}\n\nexport class InvariantError extends Error {\n name = 'Invariant Violation'\n\n constructor(public readonly message: string, ...positionals: any[]) {\n super(message)\n this.message = format(message, ...positionals)\n cleanErrorStack(this)\n }\n}\n\nexport interface CustomErrorConstructor {\n new (message: string): Error\n}\n\nexport interface CustomErrorFactory {\n (message: string): Error\n}\n\nexport type CustomError = CustomErrorConstructor | CustomErrorFactory\n\ntype Invariant = {\n (\n predicate: unknown,\n message: string,\n ...positionals: any[]\n ): asserts predicate\n\n as(\n ErrorConstructor: CustomError,\n predicate: unknown,\n message: string,\n ...positionals: unknown[]\n ): asserts predicate\n}\n\nexport const invariant: Invariant = (\n predicate,\n message,\n ...positionals\n): asserts predicate => {\n if (!predicate) {\n throw new InvariantError(message, ...positionals)\n }\n}\n\ninvariant.as = (ErrorConstructor, predicate, message, ...positionals) => {\n if (!predicate) {\n const formatMessage =\n positionals.length === 0 ? message : format(message, ...positionals)\n let error: Error\n\n try {\n error = Reflect.construct(ErrorConstructor as CustomErrorConstructor, [\n formatMessage,\n ])\n } catch (err) {\n error = (ErrorConstructor as CustomErrorFactory)(formatMessage)\n }\n\n throw error\n }\n}\n"],"mappings":";AAAA,IAAM,kBAAkB;AAExB,SAAS,oBAAoB,YAAiB,MAAmB;AAC/D,UAAQ,MAAM;AAAA,IAEZ,KAAK;AACH,aAAO;AAAA,IAGT,KAAK;AAAA,IACL,KAAK;AACH,aAAO,OAAO,UAAU;AAAA,IAG1B,KAAK;AACH,aAAO,KAAK,UAAU,UAAU;AAAA,IAGlC,KAAK,KAAK;AAER,UAAI,OAAO,eAAe,UAAU;AAClC,eAAO;AAAA,MACT;AAEA,YAAM,OAAO,KAAK,UAAU,UAAU;AAGtC,UAAI,SAAS,QAAQ,SAAS,QAAQ,mBAAmB,KAAK,IAAI,GAAG;AACnE,eAAO;AAAA,MACT;AAEA,aAAO;AAAA,IACT;AAAA,EACF;AACF;AAEO,SAAS,OAAO,YAAoB,aAA4B;AACrE,MAAI,YAAY,WAAW,GAAG;AAC5B,WAAO;AAAA,EACT;AAEA,MAAI,kBAAkB;AACtB,MAAI,mBAAmB,QAAQ;AAAA,IAC7B;AAAA,IACA,CAAC,OAAO,WAAW,GAAG,SAAS;AAC7B,YAAM,aAAa,YAAY;AAC/B,YAAM,QAAQ,oBAAoB,YAAY,IAAI;AAElD,UAAI,CAAC,WAAW;AACd;AACA,eAAO;AAAA,MACT;AAEA,aAAO;AAAA,IACT;AAAA,EACF;AAGA,MAAI,kBAAkB,YAAY,QAAQ;AACxC,wBAAoB,IAAI,YAAY,MAAM,eAAe,EAAE,KAAK,GAAG;AAAA,EACrE;AAEA,qBAAmB,iBAAiB,QAAQ,WAAW,GAAG;AAE1D,SAAO;AACT;;;AC/DA,IAAM,yBAAyB;AAO/B,SAAS,gBAAgB,OAAoB;AAC3C,MAAI,CAAC,MAAM,OAAO;AAChB;AAAA,EACF;AAEA,QAAM,YAAY,MAAM,MAAM,MAAM,IAAI;AACxC,YAAU,OAAO,GAAG,sBAAsB;AAC1C,QAAM,QAAQ,UAAU,KAAK,IAAI;AACnC;AAEO,IAAM,iBAAN,cAA6B,MAAM;AAAA,EAGxC,YAA4B,YAAoB,aAAoB;AAClE,UAAM,OAAO;AADa;AAF5B,gBAAO;AAIL,SAAK,UAAU,OAAO,SAAS,GAAG,WAAW;AAC7C,oBAAgB,IAAI;AAAA,EACtB;AACF;AA2BO,IAAM,YAAuB,CAClC,WACA,YACG,gBACmB;AACtB,MAAI,CAAC,WAAW;AACd,UAAM,IAAI,eAAe,SAAS,GAAG,WAAW;AAAA,EAClD;AACF;AAEA,UAAU,KAAK,CAAC,kBAAkB,WAAW,YAAY,gBAAgB;AACvE,MAAI,CAAC,WAAW;AACd,UAAM,gBACJ,YAAY,WAAW,IAAI,UAAU,OAAO,SAAS,GAAG,WAAW;AACrE,QAAI;AAEJ,QAAI;AACF,cAAQ,QAAQ,UAAU,kBAA4C;AAAA,QACpE;AAAA,MACF,CAAC;AAAA,IACH,SAAS,KAAP;AACA,cAAS,iBAAwC,aAAa;AAAA,IAChE;AAEA,UAAM;AAAA,EACR;AACF;","names":[]} |