@loaders.gl/schema/dist/lib/utils/assert.js

Table format APIs for JSON, CSV, etc...

// Replacement for the external assert method to reduce bundle size
// Note: We don't use the second "message" argument in calling code,
// so no need to support it here
export function assert(condition, message) {
    if (!condition) {
        throw new Error(message || 'loader assertion failed.');
    }
}