This commit addresses https://github.com/nodejs/node/issues/5431 by
changing the way that the repl handles assignment to the global _
variable.
Prior to this commit, node sets the result of the last expression
evaluated in the repl to `_`. This causes problems for users of
underscore, lodash and other packages where it is common to assign
`_` to the package, e.g. `_ = require('lodash');`.
Changes in this commit now result in the following behavior.
- If unassigned on the repl, `_` continues to refer to the last
evaluated expression.
- If assigned, the default behavior of assigning `_` to the last
evaluated expression is disabled, and `_` now references whatever
value was explicitly set. A warning is issued on the repl -
'expression assignment to _ now disabled'.
- If `_` is assigned multiple times, the warning is only displayed once.
- When `.clear` is executed in the repl, `_` continues to refer to its
most recent value, whatever that is (this is per existing behavior).
If `_` had been explicitly set prior to `.clear` it will not change
again with the evaluation of the next expression.
PR-URL: https://github.com/nodejs/node/pull/5535
Fixes: https://github.com/nodejs/node/issues/5431
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
Currently, there is a check to ensure that the user either
provides an object or a string to repl.start(). The string case
is used to set a REPL prompt. However, a default of '> ' already
exists, so forcing the user to specify a prompt is a bit
redundant. This commit removes this restriction.
Fixes: https://github.com/nodejs/node/issues/5385
PR-URL: https://github.com/nodejs/node/pull/5388
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Julian Duque <julianduquej@gmail.com>
This commit replaces multiple usages of `function(){}` with ES2015
arrow functions in places it was forgotten earlier. The goal is to
make the docs more consistent since other functions were already
replaced with ES2015 arrows.
In addition, it fixes invalid syntax in modules.markdown to valid
syntax as well as remove `var self = this` pattern usages in the code
where they are now possible to avoid through arrow functions.
PR-URL: https://github.com/nodejs/node/pull/4832
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/4806
Reviewed-By: Stephan Belanger <admin@stephenbelanger.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
This changes the code blocks from 4-space indentation to ``` fences for
better syntax highlighting and future linting support. Minor On-the-fly
changes for typos and highlight breaking markdown have been made.
JSON-Style objects have been changed so their closing bracket is
on the same line as the opening one.
Known issues:
* Not every JSON / object notation has been improved. Should
make another run for this.
* Some example functions break hightlighting due to various
combinations of brackets. However changing them means leaving
the code style.
Fixes: https://github.com/nodejs/node/issues/4726
PR-URL: https://github.com/nodejs/node/pull/4733
Reviewed-By: Roman Reiss <me@silverwind.io>
If one were to set NODE_REPL_HISTORY to a string that contains only a
space (" "), then the history file would be created with that name
which can cause problems are certain systems.
PR-URL: https://github.com/nodejs/node/pull/4539
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
The docs were recently refactored, and some "above" and "below"
references were no longer accurate. This commit removes many
such references, and replaces others with links.
PR-URL: https://github.com/nodejs/node/pull/4499
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
* Use single quotes consistently
* Modernize examples to use template strings and arrow funcs
* Fix a few typos
* Example edits for consistency
PR-URL: https://github.com/nodejs/node/pull/4282
Reviewed-By: Chris Dickinson <christopher.s.dickinson@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
* add backticks around names
* add single quotes around event names
* add parenthesis after function names
* add internal links between different sections
* add external links to MDN for some JavaScript references
* sort the link definitions alphabetically
PR-URL: https://github.com/nodejs/node/pull/4054
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reorders, with no contextual changes, the repl documentation with class
definitions at the top and alphabetically.
PR-URL: https://github.com/nodejs/node/pull/3859
Reviewed-By: Roman Klauke <romaaan.git@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Also some minor edits so the additions make sense.
PR-URL: https://github.com/nodejs/node/pull/3765
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reorders, with no contextual changes, the repl documentation
alphabetically.
PR-URL: https://github.com/nodejs/node/pull/3662
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
The deprecation messages in the documentations should be in the format
Stability: 0 - Deprecated: Use [alternate] instead.
so that they will be consistent.
PR-URL: https://github.com/nodejs/node/pull/2450
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
This commit replaces instances of io.js with Node.js, based on the
recent convergence. There are some remaining instances of io.js,
related to build and the installer.
Fixes: https://github.com/nodejs/node/issues/2361
PR-URL: https://github.com/nodejs/node/pull/2367
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: João Reis <reis@janeasystems.com>
See: https://github.com/nodejs/io.js/issues/1798
When an Object is printed in REPL, the actual representation can be
overriden by defining `inspect` method on the objects. This patch
includes a note about the same in the REPL documentation.
PR-URL: https://github.com/nodejs/io.js/pull/2142
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
REPL evaluate `.scope` when it needs to get a list of the variable names
available in the current scope. Do not throw if the output of such
evaluation is not array, just ignore it.
PR-URL: https://github.com/nodejs/io.js/pull/1682
Reviewed-By: Fedor Indutny <fedor@indutny.com>
this creates a new internal module responsible for providing
the repl created via "iojs" or "iojs -i," and adds the following
options to the readline and repl subsystems:
* "repl mode" - determine whether a repl is strict mode, sloppy mode,
or auto-detect mode.
* historySize - determine the maximum number of lines a repl will store
as history.
The built-in repl gains persistent history support when the
NODE_REPL_HISTORY_FILE environment variable is set. This functionality
is not exposed to userland repl instances.
PR-URL: https://github.com/iojs/io.js/pull/1513
Reviewed-By: Fedor Indutny <fedor@indutny.com>
This simplifies the stability index to 4 levels:
0 - deprecated
1 - experimental / feature-flagged
2 - stable
3 - locked
Domains has been downgraded to deprecated, assert has been
downgraded to stable. Timers and Module remain locked. All
other APIs are now stable.
PR-URL: https://github.com/iojs/io.js/pull/943
Fixes: https://github.com/iojs/io.js/issues/930
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Vladimir Kurchatkin <vladimir.kurchatkin@gmail.com>
Running repl.start without the prompt set produces this error:
repl.js:95
throw new Error('An options Object, or a prompt String are required');
^
Error: An options Object, or a prompt String are required
at new REPLServer (repl.js:95:11)
at Object.exports.start (repl.js:321:14)
at Object.<anonymous> (/Users/dan/Dropbox/Documents/dev/nextgen/repl_test.js:5:6)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.runMain (module.js:492:10)
at process.startup.processNextTick.process._tickCallback (node.js:244:9)
This should only be minimally used, since the `terminal` value will usually be
what you are expecting. This option is specifically for the case where `terminal`
is false, but you still want colors to be output (or vice-versa).
Previously this was a module-level setting, meaning that all REPL instances
had to share the same writer function. Turning it into one of the options
allows individual REPL instances to use their own writer function.
The overall goal here is to make readline more interoperable with other node
Streams like say a net.Socket instance, in "terminal" mode.
See #2922 for all the details.
Closes#2922.
Fix#1484Fix#1834Fix#1482Fix#771
It's been a while now, and we've seen how this separate context thing
works. It constantly confuses people, and no one actually uses '.clear'
anyway, so the benefit of that feature does not justify the constant
WTFery.
This makes repl.context actually be a getter that returns the global
object, and prints a deprecation warning. The '.clear' command is gone,
and will report that it's an invalid repl keyword. Tests updated to
allow the require, module, and exports globals, which are still
available in the repl just like they were before, by making them global.
