Break down large glyph source files into smaller pieces

font-src/support/glyph-block.js

@@ -0,0 +1,31 @@
+"use strict";
+
+class GlyphBlock {
+	constructor(capture, blockName, body) {
+		this.capture = capture;
+		this.blockName = blockName;
+		this.body = body;
+
+		this.resolved = false;
+		this.exports = {};
+	}
+	resolve() {
+		if (this.resolved) return this.exports;
+		this.resolved = true;
+
+		const pendingApplications = [];
+		const ExportCapture = fnObj => {
+			pendingApplications.push(() => {
+				for (const [k, v] of Object.entries(fnObj())) {
+					this.exports[k] = v;
+				}
+			});
+		};
+
+		this.body(this.capture, ExportCapture);
+		for (const f of pendingApplications) f();
+		return this.exports;
+	}
+}
+
+module.exports = GlyphBlock;