Function unwrapIfNotMulti

dash/dash-renderer/src/actions/callbacks.ts:116–166

(
    paths: any,
    idProps: any,
    spec: any,
    anyVals: any,
    depType: any
)

const setCallbackJobOutdated = createAction('CALLBACK_JOB_OUTDATED');

function unwrapIfNotMulti(
    paths: any,
    idProps: any,
    spec: any,
    anyVals: any,
    depType: any
) {
    let msg = '';

    if (isMultiValued(spec)) {
        return [idProps, msg];
    }

    if (idProps.length !== 1) {
        if (!idProps.length) {
            if (spec.allow_optional) {
                idProps = [{...spec, value: null}];
                msg = '';
            } else {
                const isStr = typeof spec.id === 'string';
                msg =
                    'A nonexistent object was used in an `' +
                    depType +
                    '` of a Dash callback. The id of this object is ' +
                    (isStr
                        ? '`' + spec.id + '`'
                        : JSON.stringify(spec.id) +
                          (anyVals ? ' with MATCH values ' + anyVals : '')) +
                    ' and the property is `' +
                    spec.property +
                    (isStr
                        ? '`. The string ids in the current layout are: [' +
                          keys(paths.strs).join(', ') +
                          ']'
                        : '`. The wildcard ids currently available are logged above.');
            }
        } else {
            msg =
                'Multiple objects were found for an `' +
                depType +
                '` of a callback that only takes one value. The id spec is ' +
                JSON.stringify(spec.id) +
                (anyVals ? ' with MATCH values ' + anyVals : '') +
                ' and the property is `' +
                spec.property +
                '`. The objects we found are: ' +
                JSON.stringify(map(pick(['id', 'property']), idProps));
        }
    }
    return [idProps[0], msg];
}

function fillVals(
    paths: any,