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repl: add hint as to how to exit #20617

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monkingxue wants to merge 5 commits into from
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repl: add hint as to how to exit #20617

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7b88a82
repl: add friendly tips about how to exit repl
monkingxue May 9, 2018
17e1272
style: fix the code style
monkingxue May 10, 2018
51282ef
fix: duplication of command name and variable name
monkingxue May 10, 2018
93c1647
fix: move the check of variables' name to before the command run
monkingxue May 11, 2018
de3385a
style
monkingxue May 18, 2018
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style: fix the code style
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@monkingxue
monkingxue committed May 18, 2018
commit 17e127267370681b52fd983dcdb2de057c79d6f1
34 changes: 17 additions & 17 deletions lib/repl.js
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Original file line number Diff line number Diff line change
Expand Up @@ -214,14 +214,15 @@ function REPLServer(prompt,
}

function defaultEval(code, context, file, cb) {
var err, result, script, wrappedErr, trimCmd;
var isExitCmd = false;
var err, result, script, wrappedErr;
var isExitCommand = false;
var wrappedCmd = false;
var awaitPromise = false;
var input = code;
var trimCommand = code.trim();
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@BridgeAR BridgeAR May 18, 2018

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Would you be so kind and rename the variable to trimmedCommand? Otherwise I would confuse it with a function :-)


if ((trimCmd = code.trim()) && (trimCmd === 'exit' || trimCmd === 'quit')) {
isExitCmd = true;
if ((trimCommand === 'exit' || trimCommand === 'quit')) {
isExitCommand = true;
}

if (/^\s*\{/.test(code) && /\}\s*$/.test(code)) {
Expand Down Expand Up @@ -336,21 +337,20 @@ function REPLServer(prompt,
}
}
} catch (e) {
if (isExitCmd) {
if (isExitCommand) {
self.outputStream.write('(To exit, press ^D or type .exit)\n');
return self.displayPrompt();
} else {
err = e;
if (err && err.code === 'ERR_SCRIPT_EXECUTION_INTERRUPTED') {
// The stack trace for this case is not very useful anyway.
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@BridgeAR BridgeAR May 18, 2018

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Nit: this is a unrelated change and I think the comment is better the way it was before.

Object.defineProperty(err, 'stack', { value: '' });
}
if (process.domain) {
debug('not recoverable, send to domain');
process.domain.emit('error', err);
process.domain.exit();
return;
}
}
err = e;
if (err && err.code === 'ERR_SCRIPT_EXECUTION_INTERRUPTED') {
// The stack trace for this case is not very useful anyway.
Object.defineProperty(err, 'stack', { value: '' });
}
if (process.domain) {
debug('not recoverable, send to domain');
process.domain.emit('error', err);
process.domain.exit();
return;
}
}

Expand Down