@mui/system
Version:
MUI System is a set of CSS utilities to help you build custom designs more efficiently. It makes it possible to rapidly lay out custom designs.
42 lines (40 loc) • 1.81 kB
JavaScript
export const filterBreakpointKeys = (breakpointsKeys, responsiveKeys) => breakpointsKeys.filter(key => responsiveKeys.includes(key));
export const traverseBreakpoints = (breakpoints, responsive, iterator) => {
const smallestBreakpoint = breakpoints.keys[0]; // the keys is sorted from smallest to largest by `createBreakpoints`.
if (Array.isArray(responsive)) {
responsive.forEach((breakpointValue, index) => {
iterator((responsiveStyles, style) => {
if (index <= breakpoints.keys.length - 1) {
if (index === 0) {
Object.assign(responsiveStyles, style);
} else {
responsiveStyles[breakpoints.up(breakpoints.keys[index])] = style;
}
}
}, breakpointValue);
});
} else if (responsive && typeof responsive === 'object') {
// prevent null
// responsive could be a very big object, pick the smallest responsive values
const keys = Object.keys(responsive).length > breakpoints.keys.length ? breakpoints.keys : filterBreakpointKeys(breakpoints.keys, Object.keys(responsive));
keys.forEach(key => {
if (breakpoints.keys.includes(key)) {
// @ts-ignore already checked that responsive is an object
const breakpointValue = responsive[key];
if (breakpointValue !== undefined) {
iterator((responsiveStyles, style) => {
if (smallestBreakpoint === key) {
Object.assign(responsiveStyles, style);
} else {
responsiveStyles[breakpoints.up(key)] = style;
}
}, breakpointValue);
}
}
});
} else if (typeof responsive === 'number' || typeof responsive === 'string') {
iterator((responsiveStyles, style) => {
Object.assign(responsiveStyles, style);
}, responsive);
}
};