Add extracted source directory and README navigation

extracted-source/node_modules/@alcalzone/ansi-tokenize/build/diff.js

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+import { undoAnsiCodes } from "./undo.js";
+/**
+ * Returns the minimum amount of ANSI codes necessary to get from the compound style `from` to `to`.
+ * Both `from` and `to` are expected to be reduced.
+ */
+export function diffAnsiCodes(from, to) {
+    const endCodesInTo = new Set(to.map((code) => code.endCode));
+    const startCodesInFrom = new Set(from.map((code) => code.code));
+    return [
+        // Ignore all styles in `from` that are not overwritten or removed by `to`
+        // Disable all styles in `from` that are removed in `to`
+        ...undoAnsiCodes(from.filter((code) => !endCodesInTo.has(code.endCode))),
+        // Add all styles in `to` that don't exist in `from`
+        ...to.filter((code) => !startCodesInFrom.has(code.code)),
+    ];
+}
+//# sourceMappingURL=diff.js.map