nestjs-swagger-dto/lib/decorators/is-enum.js

Nestjs swagger dto decorators

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.IsEnum = void 0;
const swagger_1 = require("@nestjs/swagger");
const class_validator_1 = require("class-validator");
const core_1 = require("../core");
/**
 * Usage:
 * ```ts
 * enum OneOrTwo { One = 1, Two = 2, }
 * IsEnum({ enum: { OneOrTwo } })
 *
 * IsEnum({ enum: { OneOrTwo: [1, 2] } })
 * ```
 */
const IsEnum = ({ enum: enumOptions, ...base }) => {
    const { enumValues, enumName } = getEnumNameAndValues(enumOptions);
    let apiPropertyOptions = {
        type: typeof enumValues[0],
        enum: enumValues,
        enumName,
    };
    // workaround for Nest's @Query handling
    if (typeof base.isArray === 'object' && base.isArray.force) {
        apiPropertyOptions = { type: 'array', items: { $ref: (0, swagger_1.getSchemaPath)(enumName) } };
    }
    return (0, core_1.compose)(apiPropertyOptions, base, (0, class_validator_1.IsIn)(enumValues, { each: !!base.isArray }));
};
exports.IsEnum = IsEnum;
function getEnumNameAndValues(e) {
    const keys = Object.keys(e);
    if (keys.length !== 1) {
        throw new Error('EnumOptions object should have exactly one key');
    }
    const [enumName] = keys;
    return { enumName, enumValues: Object.values(e[enumName]) };
}
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