Initial work of ESM transformation

font-src/support/util/formatter.mjs

@@ -1,5 +1,3 @@
-"use strict";
-
 function struct(leader, ...items) {
 	return "" + leader + "(" + items.join(";") + ")";
 }
@@ -9,21 +7,18 @@ function tuple(...items) {
 function list(items) {
 	return "{" + items.join(";") + "}";
 }
-
 function n(x) {
 	return String(Math.round(x * 0x10000));
 }
-
 function typedPoint(z) {
 	return tuple(z.type, n(z.x), n(z.y));
 }
 function gizmo(g) {
 	return tuple(n(g.xx), n(g.xy), n(g.yx), n(g.yy), n(g.x), n(g.y));
 }
-
-exports.struct = struct;
-exports.tuple = tuple;
-exports.list = list;
-exports.n = n;
-exports.typedPoint = typedPoint;
-exports.gizmo = gizmo;
+export { struct };
+export { tuple };
+export { list };
+export { n };
+export { typedPoint };
+export { gizmo };

font-src/support/util/mask-bit.mjs

@@ -1,14 +1,10 @@
-"use strict";
-
-exports.maskBit = function maskBit(x, y) {
-	return x & (1 << y);
-};
-
-exports.maskBits = function maskBits(x, y) {
-	return x & y;
-};
-
 const pcNibbleLookup = [0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4];
-exports.popCountByte = function (x) {
+export function maskBit(x, y) {
+	return x & (1 << y);
+}
+export function maskBits(x, y) {
+	return x & y;
+}
+export const popCountByte = function (x) {
 	return pcNibbleLookup[x & 0x0f] + pcNibbleLookup[(x >>> 4) & 0x0f];
 };

font-src/support/util/monotonic-interpolate.mjs

@@ -1,9 +1,6 @@
-"use strict";
-
-exports.monotonicInterpolate = function (xs, ys) {
+export const monotonicInterpolate = function (xs, ys) {
 	let i,
 		length = xs.length;
-
 	// Deal with length issues
 	if (length != ys.length) {
 		throw "Need an equal count of xs and ys.";
@@ -21,7 +18,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 			return result;
 		};
 	}
-
 	// Rearrange xs and ys so that xs is sorted
 	let indexes = [];
 	for (i = 0; i < length; i++) {
@@ -40,7 +36,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 		xs.push(+oldXs[indexes[i]]);
 		ys.push(+oldYs[indexes[i]]);
 	}
-
 	// Get consecutive differences and slopes
 	let dys = [],
 		dxs = [],
@@ -52,7 +47,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 		dys.push(dy);
 		ms.push(dy / dx);
 	}
-
 	// Get degree-1 coefficients
 	let c1s = [ms[0]];
 	for (i = 0; i < dxs.length - 1; i++) {
@@ -68,7 +62,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 		}
 	}
 	c1s.push(ms[ms.length - 1]);
-
 	// Get degree-2 and degree-3 coefficients
 	let c2s = [],
 		c3s = [];
@@ -80,7 +73,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 		c2s.push((m - c1 - common) * invDx);
 		c3s.push(common * invDx * invDx);
 	}
-
 	// Return interpolant function
 	return function (x) {
 		// The rightmost point in the dataset should give an exact result
@@ -88,7 +80,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 		if (x == xs[i]) {
 			return ys[i];
 		}
-
 		// Search for the interval x is in, returning the corresponding y if x is one of the original xs
 		let low = 0,
 			mid,
@@ -105,7 +96,6 @@ exports.monotonicInterpolate = function (xs, ys) {
 			}
 		}
 		i = Math.max(0, high);
-
 		// Interpolate
 		let diff = x - xs[i],
 			diffSq = diff * diff;