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util: inspect boxed symbols like other primitives #7641

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util: inspect boxed symbols like other primitives #7641

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4 changes: 4 additions & 0 deletions lib/util.js
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Original file line number Diff line number Diff line change
Expand Up @@ -413,6 +413,10 @@ function formatValue(ctx, value, recurseTimes) {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[String: ' + formatted + ']', 'string');
}
if (typeof raw === 'symbol') {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[Symbol: ' + formatted + ']', 'symbol');
}
if (typeof raw === 'number') {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[Number: ' + formatted + ']', 'number');
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1 change: 1 addition & 0 deletions test/parallel/test-util-inspect.js
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Expand Up @@ -474,6 +474,7 @@ test_lines({

// test boxed primitives output the correct values
assert.equal(util.inspect(new String('test')), '[String: \'test\']');
assert.equal(util.inspect(Object(Symbol('test'))), '[Symbol: Symbol(test)]');
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Doesn't this look like having redundant information?

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No, IMO. It conveys that it's a symbol wrapped in an object; i.e., that typeof object === 'object' but that typeof object.valueOf() === 'symbol'.

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@thefourtheye I think learning the difference between Symbol(test) and [Symbol: test] might be a bit harder for people new to symbols.

This way might not be perfect, but I think the consistency with how other boxed values are displayed makes it easier to reason about what exactly is being displayed.

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Makes sense. LGTM.

assert.equal(util.inspect(new Boolean(false)), '[Boolean: false]');
assert.equal(util.inspect(new Boolean(true)), '[Boolean: true]');
assert.equal(util.inspect(new Number(0)), '[Number: 0]');
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