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console: add support for console.debug
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Adds the console.debug() method, alias for console.log(). This method is
exposed by V8 and was only available in inspector until now. Also adds
matching test and documentation.

PR-URL: #17033
Refs: #17004
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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Tiriel authored and MylesBorins committed Dec 11, 2017
1 parent a12bc2d commit 40d4fee
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Showing 3 changed files with 23 additions and 0 deletions.
9 changes: 9 additions & 0 deletions doc/api/console.md
Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,15 @@ undefined
>
```

### console.debug(data[, ...args])
<!-- YAML
added: v8.0.0
-->
* `data` {any}
* `...args` {any}

The `console.debug()` function is an alias for [`console.log()`][].

### console.dir(obj[, options])
<!-- YAML
added: v0.1.101
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3 changes: 3 additions & 0 deletions lib/console.js
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Expand Up @@ -134,6 +134,9 @@ Console.prototype.log = function log(...args) {
};


Console.prototype.debug = Console.prototype.log;


Console.prototype.info = Console.prototype.log;


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11 changes: 11 additions & 0 deletions test/parallel/test-console.js
Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,13 @@ console.log('%s %s', 'foo', 'bar', 'hop');
console.log({ slashes: '\\\\' });
console.log(custom_inspect);

// test console.debug() goes to stdout
console.debug('foo');
console.debug('foo', 'bar');
console.debug('%s %s', 'foo', 'bar', 'hop');
console.debug({ slashes: '\\\\' });
console.debug(custom_inspect);

// test console.info() goes to stdout
console.info('foo');
console.info('foo', 'bar');
Expand Down Expand Up @@ -154,6 +161,10 @@ for (const expected of expectedStrings) {
assert.strictEqual(errStrings.shift(), `${expected}\n`);
}

for (const expected of expectedStrings) {
assert.strictEqual(strings.shift(), `${expected}\n`);
}

assert.strictEqual(strings.shift(),
"{ foo: 'bar', inspect: [Function: inspect] }\n");
assert.strictEqual(strings.shift(),
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