In Puppeteer v25.12.0, CommandOptions documents one property: timeout, with type number. The official reference does not explain what it times, its units, or its default. Do not assume it behaves like LaunchOptions.timeout, which has a separately documented purpose: limiting how long Puppeteer waits for a browser to start.
What is Puppeteer CommandOptions?
CommandOptions is an interface in Puppeteer’s v25.12.0 API reference. Its property table lists only timeout, typed as number. The description and default are not provided. The reference does not establish the timeout’s unit, which operation it applies to, or its runtime behavior.
See the Puppeteer CommandOptions interface reference. Based on that page, there is no documented basis for adding further properties or assigning a specific meaning to CommandOptions.timeout.
What does CommandOptions.timeout do?
The checked API reference identifies the property but does not say what it times. It also does not specify whether the value is measured in milliseconds, provide a default, or explain whether zero disables a timeout. Those details should not be inferred from another Puppeteer option with the same property name.
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If a method or type in your code refers to CommandOptions, consult that method’s own documentation and the version of Puppeteer you are using for context. The interface page alone is not enough to determine the property’s operational effect.
How CommandOptions.timeout differs from LaunchOptions.timeout
LaunchOptions.timeout is a distinct property passed to puppeteer.launch(). In the v25.12.0 reference, it is the maximum time in milliseconds to wait for the browser to start. Its documented default is 30,000 ms (30 seconds), and 0 disables that launch timeout. These facts apply to LaunchOptions.timeout, not automatically to CommandOptions.timeout.
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| Property | What the reference establishes | Default and units |
|---|---|---|
CommandOptions.timeout |
One numeric property is listed; the API page does not identify the operation being timed. | Not stated; units not stated. |
LaunchOptions.timeout |
Maximum wait for the browser to start. | 30,000 milliseconds; 0 disables the timeout. |
For launch behavior, see the Puppeteer LaunchOptions reference. Matching property names do not establish matching semantics.
Using launch options without confusing the two timeouts
PuppeteerNode.launch() accepts optional LaunchOptions and returns a Promise<Browser>. Here is a minimal example using the documented launch timeout:
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const browser = await puppeteer.launch({
timeout: 30_000,
});This sets the browser-startup wait in milliseconds. It does not demonstrate or configure CommandOptions.timeout. The official launch method documentation is at PuppeteerNode.launch().
Browser selection and package requirements
- The standard
puppeteerpackage downloads and uses a specific Chrome version by default. Puppeteer documents its bundled Chrome for Testing build as its compatibility baseline. - With
puppeteer-core, provide eitherexecutablePathorchannelwhen callinglaunch(). - Puppeteer says an external
executablePathis only guaranteed to work with the bundled browser; when using an external executable, the reference advises settingbrowseras well. Use another browser executable at your own risk. - Puppeteer configuration files and environment variables are ignored by
puppeteer-core.
For configuration details, consult the Puppeteer configuration guide.
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Other LaunchOptions distinctions
headless: trueselects new headless mode;headless: 'shell'selects the old headless mode.devtools: trueforcesheadlesstofalse.ignoreDefaultArgscan remove selected default arguments or disable all default arguments. Puppeteer cautions that it should be used carefully.
Troubleshooting timeout confusion
- You need to limit browser startup time: set
LaunchOptions.timeoutin the options passed topuppeteer.launch(). Its documented unit is milliseconds; its documented default is 30,000 ms, and zero disables it. - You found
CommandOptions.timeoutin a type or method signature: do not assume it controls browser startup. The v25.12.0 interface page does not define its operation, units, or default. Check the specific method’s documentation and the installed package version. - Your
puppeteer-corelaunch cannot find a browser: provideexecutablePathorchannelas required by the launch documentation. - An external browser executable behaves unexpectedly: Puppeteer guarantees compatibility only with its bundled browser. Check the executable and browser configuration, and consider using the bundled Chrome for Testing version.
- Configuration settings appear to be ignored: the configuration guide states that configuration files and environment variables are ignored by
puppeteer-core.
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What is the default Puppeteer browser launch timeout?
The v25.12.0 LaunchOptions reference lists 30,000 milliseconds (30 seconds).
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Does Puppeteer CommandOptions have a documented timeout unit?
No. Its v25.12.0 interface page lists a numeric timeout property but does not specify units.
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