fuse-angular/src/app/core/fuseUtils.ts

export class FuseUtils
{

    public static filterArrayByString(mainArr, searchText)
    {
        searchText = searchText.toLowerCase();

        return mainArr.filter(itemObj => {
            return this.searchInObj(itemObj, searchText);
        });
    }

    public static searchInObj(itemObj, searchText)
    {

        for ( const prop in itemObj )
        {
            if ( !itemObj.hasOwnProperty(prop) )
            {
                continue;
            }

            const value = itemObj[prop];

            if ( typeof value === 'string' )
            {
                if ( this.searchInSting(value, searchText) )
                {
                    return true;
                }
            }

            else if ( Array.isArray(value) )
            {
                if ( this.searchInArray(value, searchText) )
                {
                    return true;
                }

            }

            if ( typeof value === 'object' )
            {
                if ( this.searchInObj(value, searchText) )
                {
                    return true;
                }
            }
        }
    }

    public static searchInArray(arr, searchText)
    {
        for ( const value of arr )
        {
            if ( typeof value === 'string' )
            {
                if ( this.searchInSting(value, searchText) )
                {
                    return true;
                }
            }

            if ( typeof value === 'object' )
            {
                if ( this.searchInObj(value, searchText) )
                {
                    return true;
                }
            }
        }
    }

    public static searchInSting(value, searchText)
    {
        if ( value.toLowerCase().includes(searchText) )
        {
            return true;
        }
        return false;
    }
}