forked from sombochea/verdaccio-ui
fix: better type inference for MediaQuery (#180)
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@ -1,4 +1,4 @@
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import { css } from 'emotion';
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import { css, Interpolation } from 'emotion';
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export const breakpoints = {
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small: 576,
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@ -8,26 +8,31 @@ export const breakpoints = {
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xlarge: 1275,
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};
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type Sizes = keyof typeof breakpoints;
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type Breakpoints = typeof breakpoints;
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type Sizes = keyof Breakpoints;
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type MediaQuery = {
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[key in Sizes]: (cls: any) => string;
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type MediaQuery<T> = {
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[P in keyof T]: (args: Interpolation, key?: P) => string;
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};
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const mq: MediaQuery = Object.keys(breakpoints).reduce(
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(accumulator, label) => {
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const prefix = typeof breakpoints[label] === 'string' ? '' : 'min-width:';
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const suffix = typeof breakpoints[label] === 'string' ? '' : 'px';
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accumulator[label] = cls =>
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css`
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@media (${prefix + breakpoints[label] + suffix}) {
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${cls};
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}
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`;
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return accumulator;
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},
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// eslint-disable-next-line @typescript-eslint/no-object-literal-type-assertion
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{} as MediaQuery
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);
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function constructMQ(breakpoint: Sizes, args: Interpolation): string {
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const label = breakpoints[breakpoint];
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const prefix = typeof label === 'string' ? '' : 'min-width:';
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const suffix = typeof label === 'string' ? '' : 'px';
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return css`
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@media (${prefix + breakpoints[breakpoint] + suffix}) {
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${args};
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}
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`;
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}
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const mq: MediaQuery<Breakpoints> = {
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small: (args, b = 'small') => constructMQ(b, args),
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large: (args, b = 'large') => constructMQ(b, args),
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container: (args, b = 'container') => constructMQ(b, args),
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medium: (args, b = 'medium') => constructMQ(b, args),
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xlarge: (args, b = 'xlarge') => constructMQ(b, args),
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};
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export default mq;
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