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util: fix map entries inspection

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This makes sure the arrays returned by Map#entries() are handled as
any other array instead of just visualizing the entries as array.
Therefore options should have an impact on the arrays.

PR-URL: https://github.com/nodejs/node/pull/26918
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
This commit is contained in:
Ruben Bridgewater 2019-03-26 08:39:07 +01:00
parent f9da55cca2
commit 520b3e63ea
No known key found for this signature in database
GPG Key ID: F07496B3EB3C1762
2 changed files with 19 additions and 15 deletions
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29
lib/internal/util/inspect.js
View File

@ -1180,27 +1180,28 @@ function formatMapIterInner(ctx, recurseTimes, entries, state) {
const remaining = len - maxArrayLength;
const maxLength = Math.min(maxArrayLength, len);
let output = new Array(maxLength);
let start = '';
let end = '';
let middle = ' => ';
let i = 0;
if (state === kMapEntries) {
start = '[ ';
end = ' ]';
middle = ', ';
}
ctx.indentationLvl += 2;
for (; i < maxLength; i++) {
const pos = i * 2;
output[i] = `${start}${formatValue(ctx, entries[pos], recurseTimes)}` +
`${middle}${formatValue(ctx, entries[pos + 1], recurseTimes)}${end}`;
}
ctx.indentationLvl -= 2;
if (state === kWeak) {
for (; i < maxLength; i++) {
const pos = i * 2;
output[i] = `${formatValue(ctx, entries[pos], recurseTimes)}` +
` => ${formatValue(ctx, entries[pos + 1], recurseTimes)}`;
}
// Sort all entries to have a halfway reliable output (if more entries
// than retrieved ones exist, we can not reliably return the same output).
output = output.sort();
} else {
for (; i < maxLength; i++) {
const pos = i * 2;
const res = [
formatValue(ctx, entries[pos], recurseTimes),
formatValue(ctx, entries[pos + 1], recurseTimes)
];
output[i] = reduceToSingleString(ctx, res, '', ['[', ']']);
}
}
ctx.indentationLvl -= 2;
if (remaining > 0) {
output.push(`... ${remaining} more item${remaining > 1 ? 's' : ''}`);
}

5
test/parallel/test-util-inspect.js
View File

@ -1017,7 +1017,10 @@ if (typeof Symbol !== 'undefined') {
// Test Set iterators.
{
const aSet = new Set([1, 3]);
const aSet = new Set([1]);
assert.strictEqual(util.inspect(aSet.entries(), { compact: false }),
'[Set Entries] {\n [\n 1,\n 1\n ]\n}');
aSet.add(3);
assert.strictEqual(util.inspect(aSet.keys()), '[Set Iterator] { 1, 3 }');
assert.strictEqual(util.inspect(aSet.values()), '[Set Iterator] { 1, 3 }');
const setEntries = aSet.entries();