Tons of Solutions Engineering work done today for the rest of the CS team! Headway, Howard Hanna, Engels, Brighton, etc. Also completed Datasnippers auth flow and worked on Anthology's script. Cloned Anthology's courses (900..) and will clone Full Story on Monday.

Scripts/node_modules/webidl-conversions/lib/index.js

@@ -0,0 +1,189 @@
+"use strict";
+
+var conversions = {};
+module.exports = conversions;
+
+function sign(x) {
+    return x < 0 ? -1 : 1;
+}
+
+function evenRound(x) {
+    // Round x to the nearest integer, choosing the even integer if it lies halfway between two.
+    if ((x % 1) === 0.5 && (x & 1) === 0) { // [even number].5; round down (i.e. floor)
+        return Math.floor(x);
+    } else {
+        return Math.round(x);
+    }
+}
+
+function createNumberConversion(bitLength, typeOpts) {
+    if (!typeOpts.unsigned) {
+        --bitLength;
+    }
+    const lowerBound = typeOpts.unsigned ? 0 : -Math.pow(2, bitLength);
+    const upperBound = Math.pow(2, bitLength) - 1;
+
+    const moduloVal = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength) : Math.pow(2, bitLength);
+    const moduloBound = typeOpts.moduloBitLength ? Math.pow(2, typeOpts.moduloBitLength - 1) : Math.pow(2, bitLength - 1);
+
+    return function(V, opts) {
+        if (!opts) opts = {};
+
+        let x = +V;
+
+        if (opts.enforceRange) {
+            if (!Number.isFinite(x)) {
+                throw new TypeError("Argument is not a finite number");
+            }
+
+            x = sign(x) * Math.floor(Math.abs(x));
+            if (x < lowerBound || x > upperBound) {
+                throw new TypeError("Argument is not in byte range");
+            }
+
+            return x;
+        }
+
+        if (!isNaN(x) && opts.clamp) {
+            x = evenRound(x);
+
+            if (x < lowerBound) x = lowerBound;
+            if (x > upperBound) x = upperBound;
+            return x;
+        }
+
+        if (!Number.isFinite(x) || x === 0) {
+            return 0;
+        }
+
+        x = sign(x) * Math.floor(Math.abs(x));
+        x = x % moduloVal;
+
+        if (!typeOpts.unsigned && x >= moduloBound) {
+            return x - moduloVal;
+        } else if (typeOpts.unsigned) {
+            if (x < 0) {
+              x += moduloVal;
+            } else if (x === -0) { // don't return negative zero
+              return 0;
+            }
+        }
+
+        return x;
+    }
+}
+
+conversions["void"] = function () {
+    return undefined;
+};
+
+conversions["boolean"] = function (val) {
+    return !!val;
+};
+
+conversions["byte"] = createNumberConversion(8, { unsigned: false });
+conversions["octet"] = createNumberConversion(8, { unsigned: true });
+
+conversions["short"] = createNumberConversion(16, { unsigned: false });
+conversions["unsigned short"] = createNumberConversion(16, { unsigned: true });
+
+conversions["long"] = createNumberConversion(32, { unsigned: false });
+conversions["unsigned long"] = createNumberConversion(32, { unsigned: true });
+
+conversions["long long"] = createNumberConversion(32, { unsigned: false, moduloBitLength: 64 });
+conversions["unsigned long long"] = createNumberConversion(32, { unsigned: true, moduloBitLength: 64 });
+
+conversions["double"] = function (V) {
+    const x = +V;
+
+    if (!Number.isFinite(x)) {
+        throw new TypeError("Argument is not a finite floating-point value");
+    }
+
+    return x;
+};
+
+conversions["unrestricted double"] = function (V) {
+    const x = +V;
+
+    if (isNaN(x)) {
+        throw new TypeError("Argument is NaN");
+    }
+
+    return x;
+};
+
+// not quite valid, but good enough for JS
+conversions["float"] = conversions["double"];
+conversions["unrestricted float"] = conversions["unrestricted double"];
+
+conversions["DOMString"] = function (V, opts) {
+    if (!opts) opts = {};
+
+    if (opts.treatNullAsEmptyString && V === null) {
+        return "";
+    }
+
+    return String(V);
+};
+
+conversions["ByteString"] = function (V, opts) {
+    const x = String(V);
+    let c = undefined;
+    for (let i = 0; (c = x.codePointAt(i)) !== undefined; ++i) {
+        if (c > 255) {
+            throw new TypeError("Argument is not a valid bytestring");
+        }
+    }
+
+    return x;
+};
+
+conversions["USVString"] = function (V) {
+    const S = String(V);
+    const n = S.length;
+    const U = [];
+    for (let i = 0; i < n; ++i) {
+        const c = S.charCodeAt(i);
+        if (c < 0xD800 || c > 0xDFFF) {
+            U.push(String.fromCodePoint(c));
+        } else if (0xDC00 <= c && c <= 0xDFFF) {
+            U.push(String.fromCodePoint(0xFFFD));
+        } else {
+            if (i === n - 1) {
+                U.push(String.fromCodePoint(0xFFFD));
+            } else {
+                const d = S.charCodeAt(i + 1);
+                if (0xDC00 <= d && d <= 0xDFFF) {
+                    const a = c & 0x3FF;
+                    const b = d & 0x3FF;
+                    U.push(String.fromCodePoint((2 << 15) + (2 << 9) * a + b));
+                    ++i;
+                } else {
+                    U.push(String.fromCodePoint(0xFFFD));
+                }
+            }
+        }
+    }
+
+    return U.join('');
+};
+
+conversions["Date"] = function (V, opts) {
+    if (!(V instanceof Date)) {
+        throw new TypeError("Argument is not a Date object");
+    }
+    if (isNaN(V)) {
+        return undefined;
+    }
+
+    return V;
+};
+
+conversions["RegExp"] = function (V, opts) {
+    if (!(V instanceof RegExp)) {
+        V = new RegExp(V);
+    }
+
+    return V;
+};