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Revert "tty: make _read throw ERR_TTY_WRITABLE_NOT_READABLE"
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This reverts commit 91eec00.

Refs: #21654
Refs: #21203

PR-URL: #23053
Reviewed-By: James M Snell <jasnell@gmail.com>
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addaleax authored and jasnell committed Oct 17, 2018
1 parent 0e33493 commit c834be0
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Showing 5 changed files with 8 additions and 38 deletions.
13 changes: 7 additions & 6 deletions doc/api/errors.md
Original file line number Diff line number Diff line change
Expand Up @@ -1708,12 +1708,6 @@ A `Transform` stream finished with data still in the write buffer.

The initialization of a TTY failed due to a system error.

<a id="ERR_TTY_WRITABLE_NOT_READABLE"></a>
### ERR_TTY_WRITABLE_NOT_READABLE

This `Error` is thrown when a read is attempted on a TTY `WriteStream`,
such as `process.stdout.on('data')`.

<a id="ERR_UNCAUGHT_EXCEPTION_CAPTURE_ALREADY_SET"></a>
### ERR_UNCAUGHT_EXCEPTION_CAPTURE_ALREADY_SET

Expand Down Expand Up @@ -2068,6 +2062,13 @@ instance.setEncoding('utf8');
An attempt has been made to create a string larger than the maximum allowed
size.

<a id="ERR_TTY_WRITABLE_NOT_READABLE"></a>
#### ERR_TTY_WRITABLE_NOT_READABLE

This `Error` is thrown when a read is attempted on a TTY `WriteStream`,
such as `process.stdout.on('data')`.


[`--force-fips`]: cli.html#cli_force_fips
[`'uncaughtException'`]: process.html#process_event_uncaughtexception
[`child_process`]: child_process.html
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3 changes: 0 additions & 3 deletions lib/internal/errors.js
Original file line number Diff line number Diff line change
Expand Up @@ -844,9 +844,6 @@ E('ERR_TRANSFORM_ALREADY_TRANSFORMING',
E('ERR_TRANSFORM_WITH_LENGTH_0',
'Calling transform done when writableState.length != 0', Error);
E('ERR_TTY_INIT_FAILED', 'TTY initialization failed', SystemError);
E('ERR_TTY_WRITABLE_NOT_READABLE',
'The Writable side of a TTY is not Readable',
Error);
E('ERR_UNCAUGHT_EXCEPTION_CAPTURE_ALREADY_SET',
'`process.setupUncaughtExceptionCapture()` was called while a capture ' +
'callback was already active',
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13 changes: 1 addition & 12 deletions lib/tty.js
Original file line number Diff line number Diff line change
Expand Up @@ -25,11 +25,7 @@ const { inherits, _extend } = require('util');
const net = require('net');
const { TTY, isTTY } = internalBinding('tty_wrap');
const errors = require('internal/errors');
const {
ERR_INVALID_FD,
ERR_TTY_INIT_FAILED,
ERR_TTY_WRITABLE_NOT_READABLE
} = errors.codes;
const { ERR_INVALID_FD, ERR_TTY_INIT_FAILED } = errors.codes;
const { getColorDepth } = require('internal/tty');

// Lazy loaded for startup performance.
Expand Down Expand Up @@ -131,13 +127,6 @@ WriteStream.prototype._refreshSize = function() {
}
};

// A WriteStream is not readable from, so _read become a no-op.
// this method could still be called because net.Socket()
// is a duplex
WriteStream.prototype._read = function() {
this.destroy(new ERR_TTY_WRITABLE_NOT_READABLE());
};

// Backwards-compat
WriteStream.prototype.cursorTo = function(x, y) {
if (readline === undefined) readline = require('readline');
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17 changes: 0 additions & 17 deletions test/pseudo-tty/test-tty-write-stream-resume-crash.js

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