Created
May 26, 2020 14:25
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CSS-in-JS Media Query Utility Function in TypeScript
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| const breakpointMap = { | |
| // mobile-first, so there is no 'xs' for portrait phones | |
| sm: 576, // landscape phones | |
| md: 768, // tablets | |
| lg: 992, // landscape tablets and desktops | |
| xl: 1200, // extra large desktops | |
| }; | |
| type Breakpoints = typeof breakpointMap; | |
| type BreakpointLabel = keyof Breakpoints; | |
| type MediaQueries = { [BL in BreakpointLabel]: string }; | |
| export const mq: MediaQueries = (Object.entries(breakpointMap) as Array< | |
| [BreakpointLabel, Breakpoints[BreakpointLabel]] | |
| >).reduce<Partial<MediaQueries>>((accumulator, [label, bp]) => { | |
| accumulator[label] = `@media (min-width: ${bp}px)`; | |
| return accumulator; | |
| }, {}) as MediaQueries; | |
| // Usage example: | |
| // | |
| // css` | |
| // color: 'white'; | |
| // ${mq.md} { | |
| // color: 'papaya'; | |
| // } | |
| // ` |
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