/opt/canhelp/node_modules/next/dist/esm/server
Edit: /opt/canhelp/node_modules/next/dist/esm/server/accept-header.js (3852B)
function parse(raw, preferences, options) {
const lowers = new Map();
const header = raw.replace(/[ \t]/g, '');
if (preferences) {
let pos = 0;
for (const preference of preferences){
const lower = preference.toLowerCase();
lowers.set(lower, {
orig: preference,
pos: pos++
});
if (options.prefixMatch) {
const parts = lower.split('-');
while(parts.pop(), parts.length > 0){
const joined = parts.join('-');
if (!lowers.has(joined)) {
lowers.set(joined, {
orig: preference,
pos: pos++
});
}
}
}
}
}
const parts = header.split(',');
const selections = [];
const map = new Set();
for(let i = 0; i < parts.length; ++i){
const part = parts[i];
if (!part) {
continue;
}
const params = part.split(';');
if (params.length > 2) {
throw Object.defineProperty(new Error(`Invalid ${options.type} header`), "__NEXT_ERROR_CODE", {
value: "E77",
enumerable: false,
configurable: true
});
}
let token = params[0].toLowerCase();
if (!token) {
throw Object.defineProperty(new Error(`Invalid ${options.type} header`), "__NEXT_ERROR_CODE", {
value: "E77",
enumerable: false,
configurable: true
});
}
const selection = {
token,
pos: i,
q: 1
};
if (preferences && lowers.has(token)) {
selection.pref = lowers.get(token).pos;
}
map.add(selection.token);
if (params.length === 2) {
const q = params[1];
const [key, value] = q.split('=');
if (!value || key !== 'q' && key !== 'Q') {
throw Object.defineProperty(new Error(`Invalid ${options.type} header`), "__NEXT_ERROR_CODE", {
value: "E77",
enumerable: false,
configurable: true
});
}
const score = parseFloat(value);
if (score === 0) {
continue;
}
if (Number.isFinite(score) && score <= 1 && score >= 0.001) {
selection.q = score;
}
}
selections.push(selection);
}
selections.sort((a, b)=>{
if (b.q !== a.q) {
return b.q - a.q;
}
if (b.pref !== a.pref) {
if (a.pref === undefined) {
return 1;
}
if (b.pref === undefined) {
return -1;
}
return a.pref - b.pref;
}
return a.pos - b.pos;
});
const values = selections.map((selection)=>selection.token);
if (!preferences || !preferences.length) {
return values;
}
const preferred = [];
for (const selection of values){
if (selection === '*') {
for (const [preference, value] of lowers){
if (!map.has(preference)) {
preferred.push(value.orig);
}
}
} else {
const lower = selection.toLowerCase();
if (lowers.has(lower)) {
preferred.push(lowers.get(lower).orig);
}
}
}
return preferred;
}
export function acceptLanguage(header = '', preferences) {
return parse(header, preferences, {
type: 'accept-language',
prefixMatch: true
})[0] || '';
}
//# sourceMappingURL=accept-header.js.map