planning

node_modules/geotiff/dist-module/source/basesource.js

@@ -0,0 +1,38 @@
+/**
+ * @typedef Slice
+ * @property {number} offset
+ * @property {number} length
+ */
+
+export class BaseSource {
+  /**
+   *
+   * @param {Slice[]} slices
+   * @returns {ArrayBuffer[]}
+   */
+  async fetch(slices, signal = undefined) {
+    return Promise.all(
+      slices.map((slice) => this.fetchSlice(slice, signal)),
+    );
+  }
+
+  /**
+   *
+   * @param {Slice} slice
+   * @returns {ArrayBuffer}
+   */
+  async fetchSlice(slice) {
+    throw new Error(`fetching of slice ${slice} not possible, not implemented`);
+  }
+
+  /**
+   * Returns the filesize if already determined and null otherwise
+   */
+  get fileSize() {
+    return null;
+  }
+
+  async close() {
+    // no-op by default
+  }
+}