93 lines
2.4 KiB
JavaScript
93 lines
2.4 KiB
JavaScript
import { defaultIconDimensions } from "../icon/defaults.js";
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/**
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* Minify icon set
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*
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* Function finds common values for few numeric properties, such as 'width' and 'height' (see defaultIconDimensions keys for list of properties),
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* removes entries from icons and sets default entry in root of icon set object.
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*
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* For example, this:
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* {
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* icons: {
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* foo: {
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* body: '<g />',
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* width: 24
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* },
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* bar: {
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* body: '<g />',
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* width: 24
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* },
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* baz: {
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* body: '<g />',
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* width: 16
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* }
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* }
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* }
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* is changed to this:
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* {
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* icons: {
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* foo: {
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* body: '<g />'
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* },
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* bar: {
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* body: '<g />'
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* },
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* baz: {
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* body: '<g />',
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* width: 16
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* }
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* },
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* width: 24
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* }
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*/
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function minifyIconSet(data) {
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const icons = Object.keys(data.icons);
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Object.keys(defaultIconDimensions).forEach((prop) => {
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if (data[prop] === defaultIconDimensions[prop]) delete data[prop];
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const defaultValue = defaultIconDimensions[prop];
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const propType = typeof defaultValue;
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const hasMinifiedDefault = typeof data[prop] === propType && data[prop] !== defaultValue;
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let maxCount = 0;
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let maxValue = null;
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const counters = /* @__PURE__ */ new Map();
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for (let i = 0; i < icons.length; i++) {
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const item = data.icons[icons[i]];
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let value;
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if (typeof item[prop] === propType) value = item[prop];
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else if (hasMinifiedDefault) value = data[prop];
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else value = defaultIconDimensions[prop];
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if (i === 0) {
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maxCount = 1;
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maxValue = value;
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counters.set(value, 1);
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continue;
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}
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if (!counters.has(value)) {
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counters.set(value, 1);
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continue;
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}
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const count = counters.get(value) + 1;
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counters.set(value, count);
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if (count > maxCount) {
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maxCount = count;
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maxValue = value;
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}
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}
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const canMinify = maxValue !== null && maxCount > 1;
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const oldDefault = hasMinifiedDefault ? data[prop] : null;
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const newDefault = canMinify ? maxValue : oldDefault;
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if (newDefault === defaultValue) delete data[prop];
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else if (canMinify) data[prop] = newDefault;
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icons.forEach((key) => {
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const item = data.icons[key];
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const value = prop in item ? item[prop] : hasMinifiedDefault ? oldDefault : defaultValue;
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if (value === newDefault || newDefault === null && value === defaultValue) {
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delete item[prop];
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return;
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}
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if (canMinify && !(prop in item)) item[prop] = value;
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});
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});
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}
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export { minifyIconSet }; |