ReplOptions

The input prompt to display.

The Readable stream from which REPL input will be read.

The Writable stream to which REPL output will be written.

If true, specifies that the output should be treated as a TTY terminal, and have ANSI/VT100 escape codes written to it. Default: checking the value of the isTTY property on the output stream upon instantiation.

The function to be used when evaluating each given line of input. Default: an async wrapper for the JavaScript eval() function. An eval function can error with repl.Recoverable to indicate the input was incomplete and prompt for additional lines.

Defines if the repl prints output previews or not.

If true, specifies that the default writer function should include ANSI color styling to REPL output. If a custom writer function is provided then this has no effect.

If true, specifies that the default evaluation function will use the JavaScript global as the context as opposed to creating a new separate context for the REPL instance. The node CLI REPL sets this value to true.

If true, specifies that the default writer will not output the return value of a command if it evaluates to undefined.

The function to invoke to format the output of each command before writing to output.

An optional function used for custom Tab auto completion.

A flag that specifies whether the default evaluator executes all JavaScript commands in strict mode or default (sloppy) mode. Accepted values are:

• repl.REPL_MODE_SLOPPY - evaluates expressions in sloppy mode.
• repl.REPL_MODE_STRICT - evaluates expressions in strict mode. This is equivalent to prefacing every repl statement with 'use strict'.

Stop evaluating the current piece of code when SIGINT is received, i.e. Ctrl+C is pressed. This cannot be used together with a custom eval function.