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105 lines
3.1 KiB
TypeScript
105 lines
3.1 KiB
TypeScript
import {LoremIpsum} from 'lorem-ipsum';
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import truncate from 'truncate-html';
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import {typogrify} from 'typogr';
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import {markdownEngine} from './engines';
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const lorem = new LoremIpsum();
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/**
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* Returns block of generated `lorem ipsum` text.
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*
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* @see https://github.com/knicklabs/lorem-ipsum.js
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*/
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export const getLorem = (type: string, number = 1) => {
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switch (type) {
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case 'sentence':
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case 'sentences':
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return lorem.generateSentences(number);
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case 'paragraph':
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case 'paragraphs':
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return lorem.generateParagraphs(number);
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case 'word':
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case 'words':
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return lorem.generateWords(number);
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}
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return '';
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};
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/**
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* Strips leading whitespace from each line of a string,
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* based on the whitespace of the first line.
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*
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* @see https://github.com/sindresorhus/strip-indent
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* @see https://github.com/jamiebuilds/min-indent
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*/
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export const stripIndent = (contents: string) => {
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// Find leading whitespace of first line (ignoring initial newlines)
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const match = /^[\n\r]*([ \t]*)(?=\S)/.exec(contents);
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if (match?.[1]?.length) {
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// Strip leading whitespace based on first line
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return contents.replaceAll(
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new RegExp(`^[ \\t]{${match[1].length}}`, 'gm'),
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''
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);
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}
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return contents;
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};
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/**
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* Truncates an HTML string without breaking tags.
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*
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* @see https://github.com/oe/truncate-html
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*/
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export const truncateHTML = (html: string, words = 170) =>
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truncate(html, words, {byWords: true, keepWhitespaces: true});
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/**
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* Renders block of Markdown into HTML.
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*/
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export const markdown = (content: string) =>
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markdownEngine.render(stripIndent(content));
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/**
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* Renders single line of Markdown into HTML, without wrapping `<p>`.
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*/
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export const markdownInline = (content: string) =>
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markdownEngine.renderInline(content);
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/**
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* Applies various transformations to plain text in order to yield
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* typographically-improved HTML.
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*
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* @see https://github.com/ekalinin/typogr.js
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*/
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export const typogr = (content: string) => typogrify(content);
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/**
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* Appends full page URL to internal links (for embedding in another page).
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*/
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export const replaceInternalLinks = (content: string, url: string) =>
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content.replace(/href="#/g, `href="${url}#`);
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/**
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* Checks if a given string starts with a comparison string.
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*/
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export const startsWith = (str: string, check: string) => str.startsWith(check);
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// eslint-disable-next-line @typescript-eslint/no-explicit-any
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export default function typePlugin(eleventyConfig: any) {
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// filters...
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eleventyConfig.addLiquidFilter('truncateHTML', truncateHTML);
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eleventyConfig.addLiquidFilter('markdown', markdown);
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eleventyConfig.addLiquidFilter('markdownInline', markdownInline);
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eleventyConfig.addLiquidFilter('typogr', typogr);
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eleventyConfig.addLiquidFilter('replaceInternalLinks', replaceInternalLinks);
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eleventyConfig.addLiquidFilter('startsWith', startsWith);
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// shortcodes...
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eleventyConfig.addLiquidShortcode('lorem', getLorem);
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// paired shortcodes...
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eleventyConfig.addPairedLiquidShortcode('markdown', markdown);
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eleventyConfig.addPairedLiquidShortcode('typogr', typogr);
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}
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