docs(changelog test): i test how to automate ChangeLog

node_modules/inquirer/lib/utils/paginator.js

@@ -0,0 +1,81 @@
+'use strict';
+
+const chalk = require('chalk');
+
+/**
+ * The paginator returns a subset of the choices if the list is too long.
+ */
+
+class Paginator {
+  /**
+   * @param {import("./screen-manager")} [screen]
+   * @param {{isInfinite?: boolean}} [options]
+   */
+  constructor(screen, options = {}) {
+    const { isInfinite = true } = options;
+    this.lastIndex = 0;
+    this.screen = screen;
+    this.isInfinite = isInfinite;
+  }
+
+  paginate(output, active, pageSize) {
+    pageSize = pageSize || 7;
+    let lines = output.split('\n');
+
+    if (this.screen) {
+      lines = this.screen.breakLines(lines);
+      active = lines
+        .map((lineParts) => lineParts.length)
+        .splice(0, active)
+        .reduce((a, b) => a + b, 0);
+      lines = lines.flat();
+    }
+
+    // Make sure there's enough lines to paginate
+    if (lines.length <= pageSize) {
+      return output;
+    }
+    const visibleLines = this.isInfinite
+      ? this.getInfiniteLines(lines, active, pageSize)
+      : this.getFiniteLines(lines, active, pageSize);
+    this.lastIndex = active;
+    return (
+      visibleLines.join('\n') +
+      '\n' +
+      chalk.dim('(Move up and down to reveal more choices)')
+    );
+  }
+
+  getInfiniteLines(lines, active, pageSize) {
+    if (this.pointer === undefined) {
+      this.pointer = 0;
+    }
+    const middleOfList = Math.floor(pageSize / 2);
+    // Move the pointer only when the user go down and limit it to the middle of the list
+    if (
+      this.pointer < middleOfList &&
+      this.lastIndex < active &&
+      active - this.lastIndex < pageSize
+    ) {
+      this.pointer = Math.min(middleOfList, this.pointer + active - this.lastIndex);
+    }
+
+    // Duplicate the lines so it give an infinite list look
+    const infinite = [lines, lines, lines].flat();
+    const topIndex = Math.max(0, active + lines.length - this.pointer);
+
+    return infinite.splice(topIndex, pageSize);
+  }
+
+  getFiniteLines(lines, active, pageSize) {
+    let topIndex = active - pageSize / 2;
+    if (topIndex < 0) {
+      topIndex = 0;
+    } else if (topIndex + pageSize > lines.length) {
+      topIndex = lines.length - pageSize;
+    }
+    return lines.splice(topIndex, pageSize);
+  }
+}
+
+module.exports = Paginator;