Initial Commit

packages/media/fonts/font-decompress/src/constants/index.ts

@@ -0,0 +1,21 @@
+/** BTF command type byte values — paired with the packer in `@suaveplan/font-compress`. */
+export const CMD_M = 0;
+export const CMD_L = 1;
+export const CMD_B = 2;
+export const CMD_Q = 3;
+export const CMD_Z = 4;
+
+/** Reverse lookup from command byte to its single-character letter form. */
+export const BYTE_TO_CMD: readonly string[] = ["m", "l", "b", "q", "z"];
+
+/** Number of coordinate values per command letter. */
+export const CMD_COORD_COUNTS: Readonly<Record<string, number>> = {
+    m: 2,
+    l: 2,
+    b: 6,
+    q: 4,
+    z: 0,
+};
+
+/** Number of metric values encoded in the BTF header. */
+export const METRICS_COUNT = 9;