All files / lib buildPermissionsPolicyHeaders.js

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// Local imports
const crunchFeaturePolicyHeader = require('./crunchFeaturePolicyHeader.js')
const crunchPermissionsPolicyHeader = require('./crunchPermissionsPolicyHeader.js')
const directives = require('./PermissionsPolicy/index.js')
 
 
function reduceDirectives (supportedDirectives, permissionsPolicy, defaultValue) {
	return supportedDirectives.reduce(
		(accumulator, directive) => {
			Eif (permissionsPolicy[directive] !== false) {
				accumulator[directive] = permissionsPolicy[directive] || defaultValue
			}
 
			return accumulator
		},
		{}
	)
}
 
 
module.exports = function buildPermissionsPolicyHeaders(options = {}) {
	const {
		permissionsPolicy = {},
		permissionsPolicyDirectiveSupport = ['proposed', 'standard'],
	} = options
 
	Iif (permissionsPolicy === false) {
		return []
	}
 
	const supportedDirectives = Array.from(
		new Set(
			permissionsPolicyDirectiveSupport.map(
				directiveSet => directives[directiveSet]
			).flat()
		)
	)
 
	return [
		{
			key: 'Feature-Policy',
			value: crunchFeaturePolicyHeader(reduceDirectives(supportedDirectives, permissionsPolicy, "'none'"))
		},
		{
			key: 'Permissions-Policy',
			value: crunchPermissionsPolicyHeader(reduceDirectives(supportedDirectives, permissionsPolicy, '')),
		},
	]
}