feat(ext/console): Add string abbreviation size option for "Deno.inspect" (#14384)

3 files changed, 28 insertions, 2 deletions

diff --git a/cli/dts/lib.deno.ns.d.ts b/cli/dts/lib.deno.ns.d.ts
index 485b3d490..2caf05085 100644
--- a/cli/dts/lib.deno.ns.d.ts
+++ b/cli/dts/lib.deno.ns.d.ts
@@ -2491,6 +2491,8 @@ declare namespace Deno {
     getters?: boolean;
     /** Show an object's non-enumerable properties. Defaults to false. */
     showHidden?: boolean;
+    /** The maximum length of a string before it is truncated with an ellipsis */
+    strAbbreviateSize?: number;
   }
 
   /** Converts the input into a string that has the same format as printed by
diff --git a/cli/tests/unit/console_test.ts b/cli/tests/unit/console_test.ts
index d1c570e1b..39baaf1a3 100644
--- a/cli/tests/unit/console_test.ts
+++ b/cli/tests/unit/console_test.ts
@@ -1938,3 +1938,22 @@ Deno.test(function inspectColors() {
   assertEquals(Deno.inspect(1), "1");
   assertStringIncludes(Deno.inspect(1, { colors: true }), "\x1b[");
 });
+
+Deno.test(function inspectStringAbbreviation() {
+  const LONG_STRING =
+    "This is a really long string which will be abbreviated with ellipsis.";
+  const obj = {
+    str: LONG_STRING,
+  };
+  const arr = [LONG_STRING];
+
+  assertEquals(
+    Deno.inspect(obj, { strAbbreviateSize: 10 }),
+    '{ str: "This is a ..." }',
+  );
+
+  assertEquals(
+    Deno.inspect(arr, { strAbbreviateSize: 10 }),
+    '[ "This is a ..." ]',
+  );
+});
diff --git a/ext/console/02_console.js b/ext/console/02_console.js
index 0f51bded8..607da2db6 100644
--- a/ext/console/02_console.js
+++ b/ext/console/02_console.js
@@ -298,6 +298,7 @@
     colors: false,
     getters: false,
     showHidden: false,
+    strAbbreviateSize: 100,
   };
 
   const DEFAULT_INDENT = "  "; // Default indent string
@@ -786,11 +787,15 @@
     level,
     inspectOptions,
   ) {
+    const abbreviateSize =
+      typeof inspectOptions.strAbbreviateSize === "undefined"
+        ? STR_ABBREVIATE_SIZE
+        : inspectOptions.strAbbreviateSize;
     const green = maybeColor(colors.green, inspectOptions);
     switch (typeof value) {
       case "string": {
-        const trunc = value.length > STR_ABBREVIATE_SIZE
-          ? StringPrototypeSlice(value, 0, STR_ABBREVIATE_SIZE) + "..."
+        const trunc = value.length > abbreviateSize
+          ? StringPrototypeSlice(value, 0, abbreviateSize) + "..."
           : value;
         return green(quoteString(trunc)); // Quoted strings are green
       }