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'use strict'
const corsSafeListedMethods = /** @type {const} */ (['GET', 'HEAD', 'POST'])
const corsSafeListedMethodsSet = new Set(corsSafeListedMethods)
const nullBodyStatus = /** @type {const} */ ([101, 204, 205, 304])
const redirectStatus = /** @type {const} */ ([301, 302, 303, 307, 308])
const redirectStatusSet = new Set(redirectStatus)
/**
* @see https://fetch.spec.whatwg.org/#block-bad-port
*/
const badPorts = /** @type {const} */ ([
'1', '7', '9', '11', '13', '15', '17', '19', '20', '21', '22', '23', '25', '37', '42', '43', '53', '69', '77', '79',
'87', '95', '101', '102', '103', '104', '109', '110', '111', '113', '115', '117', '119', '123', '135', '137',
'139', '143', '161', '179', '389', '427', '465', '512', '513', '514', '515', '526', '530', '531', '532',
'540', '548', '554', '556', '563', '587', '601', '636', '989', '990', '993', '995', '1719', '1720', '1723',
'2049', '3659', '4045', '4190', '5060', '5061', '6000', '6566', '6665', '6666', '6667', '6668', '6669', '6679',
'6697', '10080'
])
const badPortsSet = new Set(badPorts)
/**
* @see https://w3c.github.io/webappsec-referrer-policy/#referrer-policy-header
*/
const referrerPolicyTokens = /** @type {const} */ ([
'no-referrer',
'no-referrer-when-downgrade',
'same-origin',
'origin',
'strict-origin',
'origin-when-cross-origin',
'strict-origin-when-cross-origin',
'unsafe-url'
])
/**
* @see https://w3c.github.io/webappsec-referrer-policy/#referrer-policies
*/
const referrerPolicy = /** @type {const} */ ([
'',
...referrerPolicyTokens
])
const referrerPolicyTokensSet = new Set(referrerPolicyTokens)
const requestRedirect = /** @type {const} */ (['follow', 'manual', 'error'])
const safeMethods = /** @type {const} */ (['GET', 'HEAD', 'OPTIONS', 'TRACE'])
const safeMethodsSet = new Set(safeMethods)
const requestMode = /** @type {const} */ (['navigate', 'same-origin', 'no-cors', 'cors'])
const requestCredentials = /** @type {const} */ (['omit', 'same-origin', 'include'])
const requestCache = /** @type {const} */ ([
'default',
'no-store',
'reload',
'no-cache',
'force-cache',
'only-if-cached'
])
/**
* @see https://fetch.spec.whatwg.org/#request-body-header-name
*/
const requestBodyHeader = /** @type {const} */ ([
'content-encoding',
'content-language',
'content-location',
'content-type',
// See https://github.com/nodejs/undici/issues/2021
// 'Content-Length' is a forbidden header name, which is typically
// removed in the Headers implementation. However, undici doesn't
// filter out headers, so we add it here.
'content-length'
])
/**
* @see https://fetch.spec.whatwg.org/#enumdef-requestduplex
*/
const requestDuplex = /** @type {const} */ ([
'half'
])
/**
* @see http://fetch.spec.whatwg.org/#forbidden-method
*/
const forbiddenMethods = /** @type {const} */ (['CONNECT', 'TRACE', 'TRACK'])
const forbiddenMethodsSet = new Set(forbiddenMethods)
const subresource = /** @type {const} */ ([
'audio',
'audioworklet',
'font',
'image',
'manifest',
'paintworklet',
'script',
'style',
'track',
'video',
'xslt',
''
])
const subresourceSet = new Set(subresource)
module.exports = {
subresource,
forbiddenMethods,
requestBodyHeader,
referrerPolicy,
requestRedirect,
requestMode,
requestCredentials,
requestCache,
redirectStatus,
corsSafeListedMethods,
nullBodyStatus,
safeMethods,
badPorts,
requestDuplex,
subresourceSet,
badPortsSet,
redirectStatusSet,
corsSafeListedMethodsSet,
safeMethodsSet,
forbiddenMethodsSet,
referrerPolicyTokens: referrerPolicyTokensSet
}
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