bundle pre-release

dist/module-debug/compress.js

@@ -0,0 +1,65 @@
+let table, timer; // = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/";
+
+const cache = new Map();
+
+function toRadix(number, radix = 255) {
+
+    if (!table) {
+        table = Array(radix);
+        // the char code 0 could be a special marker
+        for (let i = 0; i < radix; i++) table[i] = i + 1;
+        table = String.fromCharCode.apply(null, table);
+    }
+
+    let rixit,
+        residual = number,
+        result = "";
+
+
+    while (!0) {
+        rixit = residual % radix;
+        result = table.charAt(rixit) + result;
+        residual = 0 | residual / radix;
+        if (!residual) break;
+    }
+
+    return result;
+}
+
+export default function (str) {
+    if (timer) {
+        if (cache.has(str)) {
+            return cache.get(str);
+        }
+    } else {
+        timer = setTimeout(clear);
+    }
+
+    /* 2 ** ((level + 1.5) * 1.6 | 0) */
+
+    const result = toRadix("number" == typeof str ? str : lcg(str));
+
+    2e5 < cache.size && cache.clear();
+    cache.set(str, result);
+
+
+    return result;
+}
+
+function lcg(str) {
+    let range = 4294967295;
+    if ("number" == typeof str) {
+        return str & range;
+    }
+    let crc = 0;
+    for (let i = 0; i < str.length; i++) {
+        crc = (crc * 33 ^ str.charCodeAt(i)) & range;
+    }
+    // shift up from Int32 to UInt32 range 0xFFFFFFFF
+    return crc + 2147483648;
+}
+
+function clear() {
+    timer = null;
+    cache.clear();
+}