Initial boiler plate project

node_modules/next/dist/esm/server/accept-header.js

@@ -0,0 +1,110 @@
+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 new Error(`Invalid ${options.type} header`);
+        }
+        let token = params[0].toLowerCase();
+        if (!token) {
+            throw new Error(`Invalid ${options.type} header`);
+        }
+        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 new Error(`Invalid ${options.type} header`);
+            }
+            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