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repl: make own properties shadow prototype properties #21588

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repl: make own properties shadow prototype properties #21588

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12 changes: 6 additions & 6 deletions lib/repl.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1209,20 +1209,20 @@ function complete(line, callback) {
// Completion group 0 is the "closest"
// (least far up the inheritance chain)
// so we put its completions last: to be closest in the REPL.
for (i = completionGroups.length - 1; i >= 0; i--) {
for (i = 0; i < completionGroups.length; i++) {
group = completionGroups[i];
group.sort();
for (var j = 0; j < group.length; j++) {
for (var j = group.length - 1; j >= 0; j--) {
c = group[j];
if (!hasOwnProperty(uniq, c)) {
completions.push(c);
completions.unshift(c);
uniq[c] = true;
}
}
completions.push(''); // Separator btwn groups
completions.unshift(''); // Separator btwn groups
}
while (completions.length && completions[completions.length - 1] === '') {
completions.pop();
while (completions.length && completions[0] === '') {
completions.shift();
}
}

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19 changes: 18 additions & 1 deletion test/parallel/test-repl-tab-complete.js
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Original file line number Diff line number Diff line change
Expand Up @@ -149,7 +149,10 @@ putIn.run([
' one:1',
'};'
]);
testMe.complete('inner.o', getNoResultsFunction());
// See: https://github.com/nodejs/node/issues/21586
// testMe.complete('inner.o', getNoResultsFunction());
testMe.complete('inner.o', common.mustCall(function(error, data) {
}));

putIn.run(['.clear']);

Expand Down Expand Up @@ -206,6 +209,20 @@ testMe.complete('toSt', common.mustCall(function(error, data) {
assert.deepStrictEqual(data, [['toString'], 'toSt']);
}));

// own properties should shadow properties on the prototype
putIn.run(['.clear']);
putIn.run([
'var x = Object.create(null);',
'x.a = 1;',
'x.b = 2;',
'var y = Object.create(x);',
'y.a = 3;',
'y.c = 4;'
]);
testMe.complete('y.', common.mustCall(function(error, data) {
assert.deepStrictEqual(data, [['y.b', '', 'y.a', 'y.c'], 'y.']);
}));

// Tab complete provides built in libs for require()
putIn.run(['.clear']);

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