beam-cli/dist/configuration/validate.js

A beautifully simple CLI for running Lighthouse audits on a statically generated (SSG) website

import Ajv from 'ajv';
import { configurationJSONSchema } from './types.js';
const ajv = new Ajv({ strict: false });
const validate = ajv.compile(configurationJSONSchema);
export const validateConfigurationFile = (data) => {
    const valid = validate(data);
    const errors = valid ? [] : validate.errors;
    return [Boolean(valid), errors];
};
/**
 * Ensures that the lighthouse options within the user configuration is correct.
 * - If the lighthouse options is an array then the last item must be the fallback
 * - The fallback may not have the `targets` property set
 * - All other items should have a `targets` property
 */
export const validateLighthouseOptionsArray = (userConfiguration) => {
    if (!userConfiguration.lighthouse)
        return [true, ''];
    if (!Array.isArray(userConfiguration.lighthouse))
        return [true, ''];
    const lastItem = userConfiguration.lighthouse.at(-1);
    if (!lastItem)
        return [
            false,
            'The `lighthouse` property within the configuration may not be an empty array.',
        ];
    if (lastItem.targets)
        return [
            false,
            'The last item of the `lighthouse` property array within the configuration must be a fallback, and thus may not contain the `targets` property.',
        ];
    if (userConfiguration.lighthouse.slice(0, -1).some(item => !item?.targets)) {
        return [
            false,
            'All entries (except the last) of the `lighthouse` property array must include the `targets` property.',
        ];
    }
    return [true, ''];
};