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export function getDefaultSanitizeOptions () {
return {
allowedTags: [ 'a', 'p', 'span', 'br', 'strong', 'em', 'ul', 'ol', 'li' ],
allowedSchemes: [ 'http', 'https' ],
allowedAttributes: {
'a': [ 'href', 'class', 'target', 'rel' ],
'*': [ 'data-*' ]
},
transformTags: {
a: (tagName: string, attribs: any) => {
let rel = 'noopener noreferrer'
if (attribs.rel === 'me') rel += ' me'
return {
tagName,
attribs: Object.assign(attribs, {
target: '_blank',
rel
})
}
}
}
}
}
export function getTextOnlySanitizeOptions () {
return {
allowedTags: [] as string[]
}
}
export function getCustomMarkupSanitizeOptions (additionalAllowedTags: string[] = []) {
const base = getDefaultSanitizeOptions()
return {
allowedTags: [
...base.allowedTags,
...additionalAllowedTags,
'div', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'img'
],
allowedSchemes: [
...base.allowedSchemes,
'mailto'
],
allowedAttributes: {
...base.allowedAttributes,
'img': [ 'src', 'alt' ],
'*': [ 'data-*', 'style' ]
}
}
}
// Thanks: https://stackoverflow.com/a/12034334
export function escapeHTML (stringParam: string) {
if (!stringParam) return ''
const entityMap = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
'\'': ''',
'/': '/',
'`': '`',
'=': '='
}
return String(stringParam).replace(/[&<>"'`=/]/g, s => entityMap[s])
}
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