• https://cdn.bootcdn.net/ajax/libs/FlexSearch/0.5.2/flexsearch.compact.js
• https://cdn.bootcdn.net/ajax/libs/FlexSearch/0.5.2/flexsearch.es5.js
• https://cdn.bootcdn.net/ajax/libs/FlexSearch/0.5.2/flexsearch.light.js
• https://cdn.bootcdn.net/ajax/libs/FlexSearch/0.5.2/flexsearch.min.js