normul/lib/schemas/definitions/ArraySchema.js

Normul is a tiny TypeScript/JavaScript library for data normalization and transformation

import { isArray } from '../../utils.js';
import { Schema } from '../Schema.js';
import { UnionSchema } from './UnionSchema.js';
export class ArraySchema extends Schema {
    elementSchemas;
    constructor(elementSchemas) {
        super();
        this.elementSchemas = elementSchemas;
    }
    _normalize(input, ctx) {
        let array;
        if (isArray(input)) {
            array = input;
        }
        else {
            this.makeIssue({
                ctx,
                message: 'Converted to array',
                level: 'warn',
                expected: 'array',
                received: input,
            });
            array = (input === null || input === undefined) ? [] : [input];
        }
        let normalizer;
        if (this.elementSchemas.length === 1) {
            normalizer = (item, ctx) => this.invokeNormalize(this.elementSchemas[0], item, ctx);
        }
        else {
            const union = new UnionSchema(this.elementSchemas);
            normalizer = (item, ctx) => this.invokeNormalize(union, item, ctx);
        }
        return array.map((item, index) => {
            ctx.path.push(index);
            const result = normalizer(item, ctx);
            ctx.path.pop();
            return result;
        });
    }
    cloneArgs() {
        return [this.elementSchemas];
    }
}
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