%PDF-
%PDF-
Mini Shell
Mini Shell
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.getFontDefinitionFromNetwork = getFontDefinitionFromNetwork;
exports.getFontDefinitionFromManifest = getFontDefinitionFromManifest;
exports.getFontOverrideCss = getFontOverrideCss;
var Log = _interopRequireWildcard(require("../build/output/log"));
var _constants = require("../shared/lib/constants");
function _getRequireWildcardCache() {
if (typeof WeakMap !== "function") return null;
var cache = new WeakMap();
_getRequireWildcardCache = function() {
return cache;
};
return cache;
}
function _interopRequireWildcard(obj) {
if (obj && obj.__esModule) {
return obj;
}
if (obj === null || typeof obj !== "object" && typeof obj !== "function") {
return {
default: obj
};
}
var cache = _getRequireWildcardCache();
if (cache && cache.has(obj)) {
return cache.get(obj);
}
var newObj = {};
var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor;
for(var key in obj){
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null;
if (desc && (desc.get || desc.set)) {
Object.defineProperty(newObj, key, desc);
} else {
newObj[key] = obj[key];
}
}
}
newObj.default = obj;
if (cache) {
cache.set(obj, newObj);
}
return newObj;
}
const googleFontsMetrics = require("./google-font-metrics.json");
const https = require("https");
const CHROME_UA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36";
const IE_UA = "Mozilla/5.0 (Windows NT 10.0; Trident/7.0; rv:11.0) like Gecko";
function isGoogleFont(url) {
return url.startsWith(_constants.GOOGLE_FONT_PROVIDER);
}
function getFontForUA(url, UA) {
return new Promise((resolve, reject)=>{
let rawData = "";
https.get(url, {
headers: {
"user-agent": UA
}
}, (res)=>{
res.on("data", (chunk)=>{
rawData += chunk;
});
res.on("end", ()=>{
resolve(rawData.toString("utf8"));
});
}).on("error", (e)=>{
reject(e);
});
});
}
async function getFontDefinitionFromNetwork(url) {
let result = "";
/**
* The order of IE -> Chrome is important, other wise chrome starts loading woff1.
* CSS cascading 🤷♂️.
*/ try {
if (isGoogleFont(url)) {
result += await getFontForUA(url, IE_UA);
}
result += await getFontForUA(url, CHROME_UA);
} catch (e) {
Log.warn(`Failed to download the stylesheet for ${url}. Skipped optimizing this font.`);
return "";
}
return result;
}
function getFontDefinitionFromManifest(url, manifest) {
var ref;
return ((ref = manifest.find((font)=>{
if (font && font.url === url) {
return true;
}
return false;
})) == null ? void 0 : ref.content) || "";
}
function parseGoogleFontName(css) {
const regex = /font-family: ([^;]*)/g;
const matches = css.matchAll(regex);
const fontNames = new Set();
for (let font of matches){
const fontFamily = font[1].replace(/^['"]|['"]$/g, "");
fontNames.add(fontFamily);
}
return [
...fontNames
];
}
function calculateOverrideCSS(font, fontMetrics) {
const fontName = font.toLowerCase().trim().replace(/ /g, "-");
const fontKey = font.toLowerCase().trim().replace(/ /g, "");
const { category , ascentOverride , descentOverride , lineGapOverride } = fontMetrics[fontKey];
const fallbackFont = category === "serif" ? _constants.DEFAULT_SERIF_FONT : _constants.DEFAULT_SANS_SERIF_FONT;
const ascent = (ascentOverride * 100).toFixed(2);
const descent = (descentOverride * 100).toFixed(2);
const lineGap = (lineGapOverride * 100).toFixed(2);
return `
@font-face {
font-family: "${fontName}-fallback";
ascent-override: ${ascent}%;
descent-override: ${descent}%;
line-gap-override: ${lineGap}%;
src: local("${fallbackFont}");
}
`;
}
function getFontOverrideCss(url, css) {
if (!isGoogleFont(url)) {
return "";
}
try {
const fontNames = parseGoogleFontName(css);
const fontMetrics = googleFontsMetrics;
const fontCss = fontNames.reduce((cssStr, fontName)=>{
cssStr += calculateOverrideCSS(fontName, fontMetrics);
return cssStr;
}, "");
return fontCss;
} catch (e) {
console.log("Error getting font override values - ", e);
return "";
}
}
//# sourceMappingURL=font-utils.js.map
Zerion Mini Shell 1.0