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import fs from 'fs-extra';
import { join } from 'path';
import Svgo from 'svgo';
async function build(rootDir: string) {
try {
const pkgJsonPath = join(rootDir, 'package.json');
const srcDir = join(rootDir, 'src');
const srcSvgDir = join(srcDir, 'svg');
const iconDir = join(rootDir, 'icons');
const distDir = join(rootDir, 'dist');
const distIoniconsDir = join(distDir, 'ionicons');
const distSvgDir = join(distDir, 'svg');
await Promise.all([fs.emptyDir(iconDir), fs.emptyDir(distDir)]);
await fs.emptyDir(distSvgDir), await fs.emptyDir(distIoniconsDir);
const pkgData = await fs.readJson(pkgJsonPath);
const version = pkgData.version as string;
const srcSvgData = await getSvgs(srcSvgDir, distSvgDir, distIoniconsDir);
await optimizeSvgs(srcSvgData);
await Promise.all([
createDataJson(version, srcDir, distDir, srcSvgData),
createIconPackage(version, iconDir, srcSvgData),
]);
const svgSymbolsContent = await createSvgSymbols(version, distDir, srcSvgData);
await createCheatsheet(version, rootDir, distDir, svgSymbolsContent, srcSvgData);
await copyToTesting(rootDir, distDir, srcSvgData);
} catch (e) {
console.error(e);
process.exit(1);
}
}
async function optimizeSvgs(srcSvgData: SvgData[]) {
// https://github.com/svg/svgo
const optimizePass = new Svgo({});
const webComponentPass = new Svgo({
full: true,
plugins: [
{
addFillNoneCss: {
type: 'perItem',
fn: (item, params) => {
if (!Array.isArray(params.attrs)) {
params.attrs = [params.attrs];
}
if (item.isElem()) {
item.eachAttr((attr) => {
if (attr.name === 'fill') {
if (attr.value === 'none') {
item.class.add('ionicon-fill-none');
}
item.removeAttr('fill');
} else if (attr.name === 'stroke') {
item.removeAttr('stroke');
} else if (attr.name === 'stroke-width' && attr.value === '32') {
item.removeAttr('stroke-width');
item.class.add('ionicon-stroke-width');
}
});
}
},
},
} as any,
{
removeStyleElement: true,
},
{
removeScriptElement: true,
},
{
removeDimensions: true,
},
],
});
const sourcePass = new Svgo({
full: true,
plugins: [
{
addFillNoneCss: {
type: 'perItem',
fn: (item, params) => {
if (!Array.isArray(params.attrs)) {
params.attrs = [params.attrs];
}
if (item.isElem()) {
item.eachAttr((attr) => {
if (attr.name === 'stroke' || attr.name === 'fill') {
if (attr.value === '#000') {
item.addAttr({
name: attr.name,
value: 'currentColor',
prefix: '',
local: attr.name,
});
} else if (attr.value !== 'none') {
throw new Error(`invalid "${attr.name}" value: ${attr.value}`);
}
}
});
}
},
},
} as any,
{
removeStyleElement: true,
},
{
removeScriptElement: true,
},
{
removeDimensions: true,
},
],
});
const validatePass = new Svgo({
full: true,
plugins: [
{
addFillNoneCss: {
type: 'perItem',
fn: (item, params) => {
if (!Array.isArray(params.attrs)) {
params.attrs = [params.attrs];
}
if (item.isElem()) {
item.eachAttr((attr) => {
if (attr.name === 'style') {
throw new Error('Inline style attributed detected');
}
});
}
if (item.isElem('style')) {
throw new Error('Inline style element detected');
}
},
},
} as any,
],
});
await Promise.all(
srcSvgData.map(async (svgData) => {
return optimizeSvg(optimizePass, webComponentPass, sourcePass, validatePass, svgData);
}),
);
}
async function optimizeSvg(
optimizePass: Svgo,
webComponentPass: Svgo,
sourcePass: Svgo,
validatePass: Svgo,
svgData: SvgData,
) {
const srcSvgContent = await fs.readFile(svgData.srcFilePath, 'utf8');
const optimizedSvg = await optimizePass.optimize(srcSvgContent, { path: svgData.srcFilePath });
const optimizedCode = optimizedSvg.data.replace(
/<svg (.*?)>/,
`<svg xmlns="http://www.w3.org/2000/svg" class="ionicon" viewBox="0 0 512 512"><title>${svgData.title}</title>`,
);
const webComponentSvg = await webComponentPass.optimize(optimizedCode, { path: svgData.srcFilePath });
const sourceSvg = await sourcePass.optimize(optimizedCode, { path: svgData.srcFilePath });
svgData.optimizedSvgContent = webComponentSvg.data;
try {
await validatePass.optimize(svgData.optimizedSvgContent, { path: svgData.srcFilePath });
} catch (e) {
console.error(`${e.message}: ${svgData.srcFilePath}`);
}
await fs.writeFile(svgData.optimizedFilePath, svgData.optimizedSvgContent);
await fs.writeFile(svgData.distSvgFilePath, sourceSvg.data);
}
async function copyToTesting(rootDir: string, distDir: string, srcSvgData: SvgData[]) {
const testDir = join(rootDir, 'www');
const testBuildDir = join(testDir, 'build');
const testSvgDir = join(testBuildDir, 'svg');
await fs.ensureDir(testSvgDir);
await Promise.all(
srcSvgData.map(async (svgData) => {
const testSvgFilePath = join(testSvgDir, svgData.fileName);
await fs.writeFile(testSvgFilePath, svgData.optimizedSvgContent);
}),
);
const distCheatsheetFilePath = join(distDir, 'cheatsheet.html');
const testCheatsheetFilePath = join(testDir, 'cheatsheet.html');
await fs.copyFile(distCheatsheetFilePath, testCheatsheetFilePath);
}
async function createSvgSymbols(version: string, distDir: string, srcSvgData: SvgData[]) {
srcSvgData = srcSvgData.sort((a, b) => {
if (a.iconName < b.iconName) return -1;
if (a.iconName > b.iconName) return 1;
return 0;
});
const symbolsSvgFilePath = join(distDir, 'ionicons.symbols.svg');
const lines = [
`<svg data-ionicons="${version}" style="display:none">`,
`<style>`,
`.ionicon {`,
` fill: currentColor;`,
` stroke: currentColor;`,
`}`,
`.ionicon-fill-none {`,
` fill: none;`,
`}`,
`.ionicon-stroke-width {`,
` stroke-width: 32px;`,
`}`,
`</style>`,
];
srcSvgData.forEach((svgData) => {
const svg = svgData.optimizedSvgContent
.replace(`<svg xmlns="http://www.w3.org/2000/svg"`, `<symbol id="${svgData.iconName}"`)
.replace(`</svg>`, `</symbol>`);
lines.push(svg);
});
lines.push(`</svg>`, ``);
const content = lines.join('\n');
await fs.writeFile(symbolsSvgFilePath, content);
return content;
}
async function createCheatsheet(
version: string,
rootDir: string,
distDir: string,
svgSymbolsContent: string,
srcSvgData: SvgData[],
) {
const CheatsheetTmpFilePath = join(rootDir, 'scripts', 'cheatsheet-template.html');
const distCheatsheetFilePath = join(distDir, 'cheatsheet.html');
const c = srcSvgData.map(
(svgData) => `<a href="./svg/${svgData.fileName}"><svg><use href="#${svgData.iconName}" xlink:href="#${svgData.iconName}"/></svg></a>`,
);
c.push(svgSymbolsContent);
const html = (await fs.readFile(CheatsheetTmpFilePath, 'utf8'))
.replace(/{{version}}/g, version)
.replace(/{{count}}/g, srcSvgData.length.toString())
.replace(/{{content}}/g, c.join('\n'));
await fs.writeFile(distCheatsheetFilePath, html);
}
async function getSvgs(srcSvgDir: string, distSvgDir: string, distIoniconsDir: string): Promise<SvgData[]> {
const optimizedSvgDir = join(distIoniconsDir, 'svg');
await fs.emptyDir(optimizedSvgDir);
const svgFiles = (await fs.readdir(srcSvgDir)).filter((fileName) => {
return !fileName.startsWith('.') && fileName.endsWith('.svg');
});
const svgData = await Promise.all(
svgFiles.map(async (fileName) => {
// fileName: airplane-outline.svg
if (fileName.toLowerCase() !== fileName) {
throw new Error(`svg filename "${fileName}" must be all lowercase`);
}
// srcFilePath: /src/svg/airplane-outline.svg
const srcFilePath = join(srcSvgDir, fileName);
// srcFilePath: /src/svg/airplane-outline.svg
const distSvgFilePath = join(distSvgDir, fileName);
// optimizedFilePath: /dist/ionicons/svg/airplane-outline.svg
const optimizedFilePath = join(optimizedSvgDir, fileName);
const dotSplit = fileName.split('.');
if (dotSplit.length > 2) {
throw new Error(`svg filename "${fileName}" cannot contain more than one period`);
}
// iconName: airplane-outline
const iconName = dotSplit[0];
if (reservedKeywords.has(iconName)) {
throw new Error(`svg icon name "${iconName}" is a reserved JavaScript keyword`);
}
// fileNameMjs: airplane-outline.mjs
const fileNameMjs = iconName + '.mjs';
// fileNameCjs: airplane-outline.mjs
const fileNameCjs = iconName + '.js';
// exportName: airplaneOutline
const exportName = camelize(iconName);
const title = toTitleCase(
fileName.replace('.svg', '').replace('-outline', '').replace('-sharp', '').replace(/-/g, ' '),
);
return {
fileName,
title,
srcFilePath,
distSvgFilePath,
srcSvgContent: await fs.readFile(srcFilePath, 'utf8'),
optimizedFilePath,
optimizedSvgContent: null,
iconName,
fileNameMjs,
fileNameCjs,
exportName,
};
}),
);
return svgData.sort((a, b) => {
if (a.exportName < b.exportName) return -1;
if (a.exportName > b.exportName) return 1;
return 0;
});
}
async function createIconPackage(version: string, iconDir: string, srcSvgData: SvgData[]) {
const iconPkgJsonFilePath = join(iconDir, 'package.json');
await Promise.all([
createEsmIcons(version, iconDir, srcSvgData),
createCjsIcons(version, iconDir, srcSvgData),
createDtsIcons(version, iconDir, srcSvgData),
]);
const iconPkgJson = {
name: 'ionicons/icons',
version,
module: 'index.mjs',
main: 'index.js',
typings: 'index.d.ts',
private: true,
};
const jsonStr = JSON.stringify(iconPkgJson, null, 2) + '\n';
await fs.writeFile(iconPkgJsonFilePath, jsonStr);
}
async function createEsmIcons(version: string, iconDir: string, srcSvgData: SvgData[]) {
const iconEsmFilePath = join(iconDir, 'index.mjs');
const o = [`/* Ionicons v${version}, ES Modules */`, ``];
srcSvgData.forEach((svgData) => {
o.push(`export const ${svgData.exportName} = ${getDataUrl(svgData)}`);
});
await fs.writeFile(iconEsmFilePath, o.join('\n') + '\n');
}
async function createCjsIcons(version: string, iconDir: string, srcSvgData: SvgData[]) {
const iconCjsFilePath = join(iconDir, 'index.js');
const o = [`/* Ionicons v${version}, CommonJS */`, ``];
srcSvgData.forEach((svgData) => {
o.push(`exports.${svgData.exportName} = ${getDataUrl(svgData)}`);
});
await fs.writeFile(iconCjsFilePath, o.join('\n') + '\n');
}
async function createDtsIcons(version: string, iconDir: string, srcSvgData: SvgData[]) {
const iconDtsFilePath = join(iconDir, 'index.d.ts');
const o = [`/* Ionicons v${version}, Types */`, ``];
srcSvgData.forEach((svgData) => {
o.push(`export declare var ${svgData.exportName}: string;`);
});
await fs.writeFile(iconDtsFilePath, o.join('\n') + '\n');
}
function getDataUrl(svgData: SvgData) {
let svg = svgData.optimizedSvgContent;
if (svg.includes(`'`)) {
throw new Error(`oh no! no single quotes allowed! ${svgData.fileName}`);
}
if (svg.includes(`\n`) || svg.includes(`\r`)) {
throw new Error(`oh no! no new lines allowed! ${svgData.fileName}`);
}
svg = svg.replace(/"/g, "'");
return `"data:image/svg+xml;utf8,${svg}"`;
}
async function createDataJson(version: string, srcDir: string, distDir: string, srcSvgData: SvgData[]) {
const srcDataJsonPath = join(srcDir, 'data.json');
const distDataJsonPath = join(distDir, 'ionicons.json');
let data: JsonData;
try {
data = await fs.readJson(srcDataJsonPath);
} catch (e) {
data = {} as any;
}
data.icons = data.icons || [];
// add new icons
srcSvgData.forEach((svgData) => {
if (!data.icons.some((i) => i.name === svgData.iconName)) {
data.icons.push({
name: svgData.iconName,
});
}
});
// remove dead icons
data.icons = data.icons.filter((dataIcon) => {
return srcSvgData.some((svgData) => dataIcon.name === svgData.iconName);
});
// sort
data.icons = data.icons.sort((a, b) => {
if (a.name < b.name) return -1;
if (a.name > b.name) return 1;
return 0;
});
data.icons.forEach((icon) => {
icon.tags = icon.tags || icon.name.split('-');
icon.tags = icon.tags.sort();
});
const srcJsonStr = JSON.stringify(data, null, 2) + '\n';
await fs.writeFile(srcDataJsonPath, srcJsonStr);
const distJsonData = {
name: 'ionicons',
version,
icons: data.icons,
};
const distJsonStr = JSON.stringify(distJsonData, null, 2) + '\n';
await fs.writeFile(distDataJsonPath, distJsonStr);
}
function camelize(text: string) {
let words = text.split(/[-_]/g); // ok one simple regexp.
return words[0].toLowerCase() + words.slice(1).map(upFirst).join('');
}
function upFirst(word: string) {
return word[0].toUpperCase() + word.toLowerCase().slice(1);
}
interface SvgData {
/**
* airplane-outline.svg
*/
fileName: string;
/**
* airplane
*/
title: string;
/**
* /src/svg/airplane-outline.svg
*/
srcFilePath: string;
/**
* /dist/ionicons/svg/airplane-outline.svg
*/
optimizedFilePath: string;
/**
* /dist/svg/airplane-outline.svg
*/
distSvgFilePath: string;
optimizedSvgContent: string;
/**
* airplane-outline
*/
iconName: string;
/**
* airplane-outline.mjs
*/
fileNameMjs: string;
/**
* airplane-outline.js
*/
fileNameCjs: string;
/**
* airplaneOutline
*/
exportName: string;
}
interface JsonData {
icons: { name: string; tags?: string[] }[];
version?: string;
}
function toTitleCase(str: string) {
const s = str.trim().toLowerCase().split(' ');
for (var i = 0; i < s.length; i++) {
s[i] = s[i].charAt(0).toUpperCase() + s[i].slice(1);
}
return s.join(' ');
}
// https://mathiasbynens.be/notes/reserved-keywords
const reservedKeywords = new Set([
'do',
'if',
'in',
'for',
'let',
'new',
'try',
'var',
'case',
'else',
'enum',
'eval',
'null',
'this',
'true',
'void',
'with',
'await',
'break',
'catch',
'class',
'const',
'false',
'super',
'throw',
'while',
'yield',
'delete',
'export',
'import',
'public',
'return',
'static',
'switch',
'typeof',
'default',
'extends',
'finally',
'package',
'private',
'continue',
'debugger',
'function',
'arguments',
'interface',
'protected',
'implements',
'instanceof',
'constructor',
]);
// let's do this
build(join(__dirname, '..'));
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