first commit

build/node_modules/pwa-manifest/index.js

@@ -0,0 +1,90 @@
+'use strict';
+
+const oassign = require('object-assign');
+const path = require('path');
+const writeJSON = require('write-json-file');
+const loadJSON = require('load-json-file');
+const readPkgUp = require('read-pkg-up');
+const isCssColorHex = require('is-css-color-hex');
+const isCssColorName = require('is-css-color-name');
+
+function validate(vals, pkg) {
+	const presets = {
+		dir: ['ltr', 'rtl', 'auto'],
+		icons: ['72', '96', '128', '144', '152', '192', '384', '512'],
+		display: ['fullscreen', 'standalone', 'minimal-ui', 'browser'],
+		orientation: [
+			'any', 'natural', 'landscape', 'landscape-primary',
+			'landscape-secondary', 'portrait', 'portrait-primary',
+			'portrait-secondary'
+		]
+	};
+	const err = m => new Error(m + ' has an invalid value: ' + vals[m]);
+	const hasPreset = (m, v) => presets[m].indexOf(v) >= 0;
+	const isCssColorVal = v => isCssColorHex(v) || isCssColorName(v);
+	const shortize = name => name.slice(0, 12);
+
+	if (vals.display && !hasPreset('display', vals.display)) {
+		throw err('display');
+	}
+
+	if (vals.orientation && !hasPreset('orientation', vals.orientation)) {
+		throw err('orientation');
+	}
+
+	if (!vals.name && pkg && pkg.name) {
+		vals.name = pkg.name;
+		vals.short_name = pkg.name;
+	}
+
+	if (vals.short_name) {
+		vals.short_name = shortize(vals.short_name);
+	}
+
+	if (vals.background_color && !isCssColorVal(vals.background_color)) {
+		throw err('background_color');
+	}
+
+	if (vals.theme_color && !isCssColorVal(vals.theme_color)) {
+		throw err('theme_color');
+	}
+
+	if (vals.dir && !hasPreset('dir', vals.dir)) {
+		throw err('dir');
+	}
+
+	return vals;
+}
+
+function manifestDir(dir) {
+	return path.join(dir, 'manifest.json');
+}
+
+module.exports = function (opts) {
+	opts = oassign({}, opts);
+
+	return readPkgUp({}).then(res => {
+		opts = validate(opts, res.pkg);
+	})
+	.then(() => loadJSON(path.join(__dirname, './assets/manifest.json')))
+	.then(manifest => {
+		oassign(manifest, opts);
+		return manifest;
+	});
+};
+
+module.exports.write = function (dir, manifest) {
+	return writeJSON(manifestDir(dir), manifest);
+};
+
+module.exports.write.sync = function (dir, manifest) {
+	return writeJSON.sync(manifestDir(dir), manifest);
+};
+
+module.exports.read = function (dir) {
+	return loadJSON(manifestDir(dir));
+};
+
+module.exports.read.sync = function (dir) {
+	return loadJSON.sync(manifestDir(dir));
+};