-
-
Notifications
You must be signed in to change notification settings - Fork 2
/
head.js
143 lines (125 loc) · 4.72 KB
/
head.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
/**
* @param d - a map of data to include, such as title, description, etc.
*
* * title
* * description
* * icon
* * styles
* * scripts
* * fonts
* * importmap
* * baseURL
*/
export function head(d) {
// console.log(d)
return `<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>${d.title}</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="${d.description}">
<link rel="icon" type="image/png" href="${d.icon || "/images/icon-512x512.png"}">
${opengraph(d)}
${googleFonts(d)}
${styles(d)}
${importmap(d)}
${scripts(d)}
<script>
const baseURL = '${d.baseURL}'
</script>
</head>
<body>`
}
function googleFonts(d) {
if (!d.fonts) {
return ''
}
return `
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
${d.fonts.map(f => `<link rel="preload" href="https://fonts.googleapis.com/css2?family=${f}" as="style" onload="this.onload=null;this.rel='stylesheet'">`).join('\n')}
`
/*
<link rel="preload" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,[email protected],100..700,0..1,-50..200" as="style" onload="this.onload=null;this.rel='stylesheet'">
<link rel="preload" href="https://fonts.googleapis.com/css2?family=Roboto+Flex:wght@400;500;700&display=swap" as="style" onload="this.onload=null;this.rel='stylesheet'">
*/
}
function styles(d) {
if (!d.styles) {
return ''
}
return d.styles.map(s => `<link rel="stylesheet" href="${s}">`).join('\n')
}
function opengraph(d) {
if (!d.title) {
return ''
}
return `
<meta property="og:type" content="website" />
<meta property="og:title" content="${d.title}" />
${d.description
? `<meta property="og:description" content="${d.description}" />`
: ''
}
${d.image ? `<meta property="og:image" content="${d.image}" />` : ''}
${d.url ? `<meta property="og:url" content="${d.url}" />` : ''}
<!-- Twitter -->
<meta name="twitter:card" content="summary">
${d.title ? `<meta name="twitter:title" content="${d.title}">` : ''}
${d.domain ? `<meta name="twitter:domain" content="${d.domain}">` : ''}
${d.url ? `<meta property="twitter:url" content="${d.url}">` : ''}
${d.description ? `<meta name="twitter:description" content="${d.description}">` : ''}
${d.image ? `<meta name="twitter:image" content="${d.image}">` : ''}
`
}
function importmap(d) {
if (!d.importmap) {
return ''
}
return `<script type="importmap">
{
"imports": {
${Object.entries(d.importmap.imports).map(i => `"${i[0]}": "${i[1]}"`).join(',\n')}
}${d.scopes ? `,
"scopes": {
${Object.entries(d.importmap.scopes).map(i => `"${i[0]}": {
${Object.entries(i[1]).map(j => `"${j[0]}": "${j[1]}"`).join(',\n')}
}`).join(',\n')}
}` : ''}
}
</script>
<!-- ES Module Shims: Import maps polyfill for older browsers without import maps support (eg Safari 16.3) -->
<script async src="https://ga.jspm.io/npm:[email protected]/dist/es-module-shims.js" crossorigin="anonymous"></script>
`
/*
example:
"imports": {
"lit": "https://cdn.jsdelivr.net/npm/lit@2/index.js",
"lit/": "https://cdn.jsdelivr.net/npm/lit@2/",
"@material/web/": "https://cdn.jsdelivr.net/npm/@material/[email protected]/",
"@lit/localize": "https://cdn.jsdelivr.net/npm/@lit/localize/lit-localize.js"
},
"scopes": {
"https://cdn.jsdelivr.net/": {
"@lit/reactive-element": "https://cdn.jsdelivr.net/npm/@lit/reactive-element@1/reactive-element.js",
"@lit/reactive-element/": "https://cdn.jsdelivr.net/npm/@lit/reactive-element@1/",
"lit-element/lit-element.js": "https://cdn.jsdelivr.net/npm/lit-element@3/lit-element.js",
"lit-html": "https://cdn.jsdelivr.net/npm/lit-html@2/lit-html.js",
"lit-html/": "https://cdn.jsdelivr.net/npm/lit-html@2/",
"tslib": "https://cdn.jsdelivr.net/npm/tslib@2/tslib.es6.mjs"
}
}
*/
}
function scripts(d) {
if (!d.scripts) {
return ''
}
let s = '<script type="module">\n'
for (let script of d.scripts) {
s += `import "${script}";\n`
}
s += '</script>'
return s
}