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import * as v from "valibot"; //#region src/utils/addError.ts /** * Adds an error message to the errors array. * * @param errors The array of error messages. * @param message The error message to add. * * @returns The new errors. */ function addError(errors, message) { if (errors) { errors.push(message); return errors; } return [message]; } //#endregion //#region src/utils/handleError.ts /** * Throws an error or logs a warning based on the configuration. * * @param message The message to throw or log. * @param config The conversion configuration. */ function handleError(message, config) { switch (config?.errorMode) { case "ignore": break; case "warn": { console.warn(message); break; } default: throw new Error(message); } } //#endregion //#region src/converters/convertAction/convertAction.ts /** * Converts any supported Valibot action to the JSON Schema format. * * @param jsonSchema The JSON Schema object. * @param valibotAction The Valibot action object. * @param config The conversion configuration. * * @returns The converted JSON Schema. */ function convertAction(jsonSchema, valibotAction, config) { if (config?.ignoreActions?.includes(valibotAction.type)) return jsonSchema; let errors; switch (valibotAction.type) { case "base64": { jsonSchema.contentEncoding = "base64"; break; } case "bic": case "cuid2": case "decimal": case "digits": case "emoji": case "hexadecimal": case "hex_color": case "nanoid": case "octal": case "ulid": { jsonSchema.pattern = valibotAction.requirement.source; break; } case "description": { jsonSchema.description = valibotAction.description; break; } case "email": { jsonSchema.format = "email"; break; } case "empty": { if (jsonSchema.type === "array") jsonSchema.maxItems = 0; else { if (jsonSchema.type !== "string") errors = addError(errors, `The "${valibotAction.type}" action is not supported on type "${jsonSchema.type}".`); jsonSchema.maxLength = 0; } break; } case "entries": { jsonSchema.minProperties = valibotAction.requirement; jsonSchema.maxProperties = valibotAction.requirement; break; } case "integer": { jsonSchema.type = "integer"; break; } case "ipv4": { jsonSchema.format = "ipv4"; break; } case "ipv6": { jsonSchema.format = "ipv6"; break; } case "iso_date": { jsonSchema.format = "date"; break; } case "iso_date_time": case "iso_timestamp": { jsonSchema.format = "date-time"; break; } case "iso_time": { jsonSchema.format = "time"; break; } case "length": { if (jsonSchema.type === "array") { jsonSchema.minItems = valibotAction.requirement; jsonSchema.maxItems = valibotAction.requirement; } else { if (jsonSchema.type !== "string") errors = addError(errors, `The "${valibotAction.type}" action is not supported on type "${jsonSchema.type}".`); jsonSchema.minLength = valibotAction.requirement; jsonSchema.maxLength = valibotAction.requirement; } break; } case "max_entries": { jsonSchema.maxProperties = valibotAction.requirement; break; } case "max_length": { if (jsonSchema.type === "array") jsonSchema.maxItems = valibotAction.requirement; else { if (jsonSchema.type !== "string") errors = addError(errors, `The "${valibotAction.type}" action is not supported on type "${jsonSchema.type}".`); jsonSchema.maxLength = valibotAction.requirement; } break; } case "max_value": { if (jsonSchema.type !== "number") errors = addError(errors, `The "max_value" action is not supported on type "${jsonSchema.type}".`); jsonSchema.maximum = valibotAction.requirement; break; } case "metadata": { if (typeof valibotAction.metadata.title === "string") jsonSchema.title = valibotAction.metadata.title; if (typeof valibotAction.metadata.description === "string") jsonSchema.description = valibotAction.metadata.description; if (Array.isArray(valibotAction.metadata.examples)) jsonSchema.examples = valibotAction.metadata.examples; break; } case "min_entries": { jsonSchema.minProperties = valibotAction.requirement; break; } case "min_length": { if (jsonSchema.type === "array") jsonSchema.minItems = valibotAction.requirement; else { if (jsonSchema.type !== "string") errors = addError(errors, `The "${valibotAction.type}" action is not supported on type "${jsonSchema.type}".`); jsonSchema.minLength = valibotAction.requirement; } break; } case "min_value": { if (jsonSchema.type !== "number") errors = addError(errors, `The "min_value" action is not supported on type "${jsonSchema.type}".`); jsonSchema.minimum = valibotAction.requirement; break; } case "multiple_of": { jsonSchema.multipleOf = valibotAction.requirement; break; } case "non_empty": { if (jsonSchema.type === "array") jsonSchema.minItems = 1; else { if (jsonSchema.type !== "string") errors = addError(errors, `The "${valibotAction.type}" action is not supported on type "${jsonSchema.type}".`); jsonSchema.minLength = 1; } break; } case "regex": { if (valibotAction.requirement.flags) errors = addError(errors, "RegExp flags are not supported by JSON Schema."); jsonSchema.pattern = valibotAction.requirement.source; break; } case "title": { jsonSchema.title = valibotAction.title; break; } case "url": { jsonSchema.format = "uri"; break; } case "uuid": { jsonSchema.format = "uuid"; break; } case "value": { jsonSchema.const = valibotAction.requirement; break; } default: errors = addError(errors, `The "${valibotAction.type}" action cannot be converted to JSON Schema.`); } if (config?.overrideAction) { const actionOverride = config.overrideAction({ valibotAction, jsonSchema, errors }); if (actionOverride) return { ...actionOverride }; } if (errors) for (const message of errors) handleError(message, config); return jsonSchema; } //#endregion //#region src/converters/convertSchema/convertSchema.ts /** * Flattens a Valibot pipe by recursively expanding nested pipes. * * @param pipe The pipeline to flatten. * * @returns A flat pipeline. */ function flattenPipe(pipe) { return pipe.flatMap((item) => "pipe" in item ? flattenPipe(item.pipe) : item); } let refCount = 0; /** * Converts any supported Valibot schema to the JSON Schema format. * * @param jsonSchema The JSON Schema object. * @param valibotSchema The Valibot schema object. * @param config The conversion configuration. * @param context The conversion context. * @param skipRef Whether to skip using a reference. * * @returns The converted JSON Schema. */ function convertSchema(jsonSchema, valibotSchema, config, context, skipRef = false) { if (!skipRef) { const referenceId = context.referenceMap.get(valibotSchema); if (referenceId) { jsonSchema.$ref = `#/$defs/${referenceId}`; if (config?.overrideRef) { const refOverride = config.overrideRef({ ...context, referenceId, valibotSchema, jsonSchema }); if (refOverride) jsonSchema.$ref = refOverride; } return jsonSchema; } } if ("pipe" in valibotSchema) { const flatPipe = flattenPipe(valibotSchema.pipe); let startIndex = 0; let stopIndex = flatPipe.length - 1; if (config?.typeMode === "input") { const inputStopIndex = flatPipe.slice(1).findIndex((item) => item.kind === "schema" || item.kind === "transformation" && (item.type === "find_item" || item.type === "parse_json" || item.type === "raw_transform" || item.type === "reduce_items" || item.type === "stringify_json" || item.type === "transform")); if (inputStopIndex !== -1) stopIndex = inputStopIndex; } else if (config?.typeMode === "output") { const outputStartIndex = flatPipe.findLastIndex((item) => item.kind === "schema"); if (outputStartIndex !== -1) startIndex = outputStartIndex; } for (let index = startIndex; index <= stopIndex; index++) { const valibotPipeItem = flatPipe[index]; if (valibotPipeItem.kind === "schema") { if (index > startIndex) handleError("Set the \"typeMode\" config to \"input\" or \"output\" to convert pipelines with multiple schemas.", config); jsonSchema = convertSchema(jsonSchema, valibotPipeItem, config, context, true); } else jsonSchema = convertAction(jsonSchema, valibotPipeItem, config); } return jsonSchema; } let errors; switch (valibotSchema.type) { case "boolean": { jsonSchema.type = "boolean"; break; } case "null": { jsonSchema.type = "null"; break; } case "number": { jsonSchema.type = "number"; break; } case "string": { jsonSchema.type = "string"; break; } case "array": { jsonSchema.type = "array"; jsonSchema.items = convertSchema({}, valibotSchema.item, config, context); break; } case "tuple": case "tuple_with_rest": case "loose_tuple": case "strict_tuple": { jsonSchema.type = "array"; jsonSchema.items = []; jsonSchema.minItems = valibotSchema.items.length; for (const item of valibotSchema.items) jsonSchema.items.push(convertSchema({}, item, config, context)); if (valibotSchema.type === "tuple_with_rest") jsonSchema.additionalItems = convertSchema({}, valibotSchema.rest, config, context); else if (valibotSchema.type === "strict_tuple") jsonSchema.additionalItems = false; break; } case "object": case "object_with_rest": case "loose_object": case "strict_object": { jsonSchema.type = "object"; jsonSchema.properties = {}; jsonSchema.required = []; for (const key in valibotSchema.entries) { const entry = valibotSchema.entries[key]; jsonSchema.properties[key] = convertSchema({}, entry, config, context); if (entry.type !== "nullish" && entry.type !== "optional") jsonSchema.required.push(key); } if (valibotSchema.type === "object_with_rest") jsonSchema.additionalProperties = convertSchema({}, valibotSchema.rest, config, context); else if (valibotSchema.type === "strict_object") jsonSchema.additionalProperties = false; break; } case "record": { if ("pipe" in valibotSchema.key) errors = addError(errors, "The \"record\" schema with a schema for the key that contains a \"pipe\" cannot be converted to JSON Schema."); if (valibotSchema.key.type !== "string") errors = addError(errors, `The "record" schema with the "${valibotSchema.key.type}" schema for the key cannot be converted to JSON Schema.`); jsonSchema.type = "object"; jsonSchema.additionalProperties = convertSchema({}, valibotSchema.value, config, context); break; } case "any": case "unknown": break; case "nullable": case "nullish": { jsonSchema.anyOf = [convertSchema({}, valibotSchema.wrapped, config, context), { type: "null" }]; if (valibotSchema.default !== void 0) jsonSchema.default = v.getDefault(valibotSchema); break; } case "exact_optional": case "optional": case "undefinedable": { jsonSchema = convertSchema(jsonSchema, valibotSchema.wrapped, config, context); if (valibotSchema.default !== void 0) jsonSchema.default = v.getDefault(valibotSchema); break; } case "literal": { if (typeof valibotSchema.literal !== "boolean" && typeof valibotSchema.literal !== "number" && typeof valibotSchema.literal !== "string") errors = addError(errors, "The value of the \"literal\" schema is not JSON compatible."); jsonSchema.const = valibotSchema.literal; break; } case "enum": { jsonSchema.enum = valibotSchema.options; break; } case "picklist": { if (valibotSchema.options.some((option) => typeof option !== "number" && typeof option !== "string")) errors = addError(errors, "An option of the \"picklist\" schema is not JSON compatible."); jsonSchema.enum = valibotSchema.options; break; } case "union": case "variant": { jsonSchema.anyOf = valibotSchema.options.map((option) => convertSchema({}, option, config, context)); break; } case "intersect": { jsonSchema.allOf = valibotSchema.options.map((option) => convertSchema({}, option, config, context)); break; } case "lazy": { let wrappedValibotSchema = context.getterMap.get(valibotSchema.getter); if (!wrappedValibotSchema) { wrappedValibotSchema = valibotSchema.getter(void 0); context.getterMap.set(valibotSchema.getter, wrappedValibotSchema); } let referenceId = context.referenceMap.get(wrappedValibotSchema); if (!referenceId) { referenceId = `${refCount++}`; context.referenceMap.set(wrappedValibotSchema, referenceId); context.definitions[referenceId] = convertSchema({}, wrappedValibotSchema, config, context, true); } jsonSchema.$ref = `#/$defs/${referenceId}`; if (config?.overrideRef) { const refOverride = config.overrideRef({ ...context, referenceId, valibotSchema: wrappedValibotSchema, jsonSchema }); if (refOverride) jsonSchema.$ref = refOverride; } break; } default: errors = addError(errors, `The "${valibotSchema.type}" schema cannot be converted to JSON Schema.`); } if (config?.overrideSchema) { const schemaOverride = config.overrideSchema({ ...context, referenceId: context.referenceMap.get(valibotSchema), valibotSchema, jsonSchema, errors }); if (schemaOverride) return { ...schemaOverride }; } if (errors) for (const message of errors) handleError(message, config); return jsonSchema; } //#endregion //#region src/storages/globalDefs/globalDefs.ts let store; /** * Adds new definitions to the global schema definitions. * * @param definitions The schema definitions. * * @beta */ function addGlobalDefs(definitions) { store = { ...store ?? {}, ...definitions }; } /** * Returns the current global schema definitions. * * @returns The schema definitions. * * @beta */ function getGlobalDefs() { return store; } //#endregion //#region src/functions/toJsonSchema/toJsonSchema.ts /** * Converts a Valibot schema to the JSON Schema format. * * @param schema The Valibot schema object. * @param config The JSON Schema configuration. * * @returns The converted JSON Schema. */ function toJsonSchema(schema, config) { const context = { definitions: {}, referenceMap: new Map(), getterMap: new Map() }; const definitions = config?.definitions ?? getGlobalDefs(); if (definitions) { for (const key in definitions) context.referenceMap.set(definitions[key], key); for (const key in definitions) context.definitions[key] = convertSchema({}, definitions[key], config, context, true); } const jsonSchema = convertSchema({ $schema: "http://json-schema.org/draft-07/schema#" }, schema, config, context); if (context.referenceMap.size) jsonSchema.$defs = context.definitions; return jsonSchema; } //#endregion //#region src/functions/toJsonSchemaDefs/toJsonSchemaDefs.ts /** * Converts Valibot schema definitions to JSON Schema definitions. * * @param definitions The Valibot schema definitions. * @param config The JSON Schema configuration. * * @returns The converted JSON Schema definitions. */ function toJsonSchemaDefs(definitions, config) { const context = { definitions: {}, referenceMap: new Map(), getterMap: new Map() }; for (const key in definitions) context.referenceMap.set(definitions[key], key); for (const key in definitions) context.definitions[key] = convertSchema({}, definitions[key], config, context, true); return context.definitions; } //#endregion export { addGlobalDefs, getGlobalDefs, toJsonSchema, toJsonSchemaDefs };