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rebundle when routes and templates change

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Rich Harris
2017-12-20 17:34:23 -05:00
parent cd91bf2ca4
commit fefb0d96d7
9 changed files with 257 additions and 73 deletions
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73
lib/templates.js
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@@ -1,43 +1,56 @@
const fs = require('fs');
const glob = require('glob');
const chokidar = require('chokidar');
const { dev } = require('./config.js');
const templates = glob.sync('*.html', { cwd: 'templates' })
.map(file => {
const template = fs.readFileSync(`templates/${file}`, 'utf-8');
const status = file.replace('.html', '').toLowerCase();
let templates;
if (!/^[0-9x]{3}$/.test(status)) {
throw new Error(`Bad template — should be a valid status code like 404.html, or a wildcard like 2xx.html`);
}
function create_templates() {
templates = glob.sync('*.html', { cwd: 'templates' })
.map(file => {
const template = fs.readFileSync(`templates/${file}`, 'utf-8');
const status = file.replace('.html', '').toLowerCase();
const specificity = (
(status[0] === 'x' ? 0 : 4) +
(status[1] === 'x' ? 0 : 2) +
(status[2] === 'x' ? 0 : 1)
);
const pattern = new RegExp(`^${status.split('').map(d => d === 'x' ? '\\d' : d).join('')}$`);
return {
test: status => pattern.test(status),
specificity,
render(data) {
return template.replace(/%sapper\.(\w+)%/g, (match, key) => {
return key in data ? data[key] : '';
});
if (!/^[0-9x]{3}$/.test(status)) {
throw new Error(`Bad template — should be a valid status code like 404.html, or a wildcard like 2xx.html`);
}
}
})
.sort((a, b) => b.specificity - a.specificity);
const specificity = (
(status[0] === 'x' ? 0 : 4) +
(status[1] === 'x' ? 0 : 2) +
(status[2] === 'x' ? 0 : 1)
);
const pattern = new RegExp(`^${status.split('').map(d => d === 'x' ? '\\d' : d).join('')}$`);
return {
test: status => pattern.test(status),
specificity,
render(data) {
return template.replace(/%sapper\.(\w+)%/g, (match, key) => {
return key in data ? data[key] : '';
});
}
}
})
.sort((a, b) => b.specificity - a.specificity);
}
create_templates();
if (dev) {
const watcher = chokidar.watch('templates/**.html', {
ignoreInitial: true
});
watcher.on('add', create_templates);
watcher.on('change', create_templates);
watcher.on('unlink', create_templates);
}
exports.render = (status, data) => {
const template = templates.find(template => template.test(status));
if (template) return template.render(data);
return `Missing template for status code ${status}`;
};
exports.onchange = fn => {
// TODO in dev mode, keep this updated, and allow
// webpack compiler etc to hook into it
};