4948240619
js: Convert _.filter(a, …) to a.filter(…).
...
And convert the corresponding function expressions to arrow style
while we’re here.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-10 14:08:12 -08:00
ac7b09d57e
js: Convert _.map(a, …) to a.map(…).
...
And convert the corresponding function expressions to arrow style
while we’re here.
import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import K from "ast-types/gen/kinds";
import fs from "fs";
import path from "path";
import process from "process";
const checkExpression = (node: n.Node): node is K.ExpressionKind =>
n.Expression.check(node);
for (const file of process.argv.slice(2)) {
console.log("Parsing", file);
const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
parser: path.extname(file) === ".ts" ? tsParser : babelParser,
});
let changed = false;
recast.visit(ast, {
visitCallExpression(path) {
const { callee, arguments: args } = path.node;
if (
n.MemberExpression.check(callee) &&
!callee.computed &&
n.Identifier.check(callee.object) &&
callee.object.name === "_" &&
n.Identifier.check(callee.property) &&
callee.property.name === "map" &&
args.length === 2 &&
checkExpression(args[0]) &&
checkExpression(args[1])
) {
const [arr, fn] = args;
path.replace(
b.callExpression(b.memberExpression(arr, b.identifier("map")), [
n.FunctionExpression.check(fn) ||
n.ArrowFunctionExpression.check(fn)
? b.arrowFunctionExpression(
fn.params,
n.BlockStatement.check(fn.body) &&
fn.body.body.length === 1 &&
n.ReturnStatement.check(fn.body.body[0])
? fn.body.body[0].argument || b.identifier("undefined")
: fn.body
)
: fn,
])
);
changed = true;
}
this.traverse(path);
},
});
if (changed) {
console.log("Writing", file);
fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
}
}
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-10 14:08:12 -08:00
02511bff1c
js: Automatically convert _.each to for…of.
...
This commit was automatically generated by the following script,
followed by lint --fix and a few small manual lint-related cleanups.
import * as babelParser from "recast/parsers/babel";
import * as recast from "recast";
import * as tsParser from "recast/parsers/typescript";
import { builders as b, namedTypes as n } from "ast-types";
import { Context } from "ast-types/lib/path-visitor";
import K from "ast-types/gen/kinds";
import { NodePath } from "ast-types/lib/node-path";
import assert from "assert";
import fs from "fs";
import path from "path";
import process from "process";
const checkExpression = (node: n.Node): node is K.ExpressionKind =>
n.Expression.check(node);
const checkStatement = (node: n.Node): node is K.StatementKind =>
n.Statement.check(node);
for (const file of process.argv.slice(2)) {
console.log("Parsing", file);
const ast = recast.parse(fs.readFileSync(file, { encoding: "utf8" }), {
parser: path.extname(file) === ".ts" ? tsParser : babelParser,
});
let changed = false;
let inLoop = false;
let replaceReturn = false;
const visitLoop = (...args: string[]) =>
function(this: Context, path: NodePath) {
for (const arg of args) {
this.visit(path.get(arg));
}
const old = { inLoop };
inLoop = true;
this.visit(path.get("body"));
inLoop = old.inLoop;
return false;
};
recast.visit(ast, {
visitDoWhileStatement: visitLoop("test"),
visitExpressionStatement(path) {
const { expression, comments } = path.node;
let valueOnly;
if (
n.CallExpression.check(expression) &&
n.MemberExpression.check(expression.callee) &&
!expression.callee.computed &&
n.Identifier.check(expression.callee.object) &&
expression.callee.object.name === "_" &&
n.Identifier.check(expression.callee.property) &&
["each", "forEach"].includes(expression.callee.property.name) &&
[2, 3].includes(expression.arguments.length) &&
checkExpression(expression.arguments[0]) &&
(n.FunctionExpression.check(expression.arguments[1]) ||
n.ArrowFunctionExpression.check(expression.arguments[1])) &&
[1, 2].includes(expression.arguments[1].params.length) &&
n.Identifier.check(expression.arguments[1].params[0]) &&
((valueOnly = expression.arguments[1].params[1] === undefined) ||
n.Identifier.check(expression.arguments[1].params[1])) &&
(expression.arguments[2] === undefined ||
n.ThisExpression.check(expression.arguments[2]))
) {
const old = { inLoop, replaceReturn };
inLoop = false;
replaceReturn = true;
this.visit(
path
.get("expression")
.get("arguments")
.get(1)
.get("body")
);
inLoop = old.inLoop;
replaceReturn = old.replaceReturn;
const [right, { body, params }] = expression.arguments;
const loop = b.forOfStatement(
b.variableDeclaration("let", [
b.variableDeclarator(
valueOnly ? params[0] : b.arrayPattern([params[1], params[0]])
),
]),
valueOnly
? right
: b.callExpression(
b.memberExpression(right, b.identifier("entries")),
[]
),
checkStatement(body) ? body : b.expressionStatement(body)
);
loop.comments = comments;
path.replace(loop);
changed = true;
}
this.traverse(path);
},
visitForStatement: visitLoop("init", "test", "update"),
visitForInStatement: visitLoop("left", "right"),
visitForOfStatement: visitLoop("left", "right"),
visitFunction(path) {
this.visit(path.get("params"));
const old = { replaceReturn };
replaceReturn = false;
this.visit(path.get("body"));
replaceReturn = old.replaceReturn;
return false;
},
visitReturnStatement(path) {
if (replaceReturn) {
assert(!inLoop); // could use labeled continue if this ever fires
const { argument, comments } = path.node;
if (argument === null) {
const s = b.continueStatement();
s.comments = comments;
path.replace(s);
} else {
const s = b.expressionStatement(argument);
s.comments = comments;
path.replace(s, b.continueStatement());
}
return false;
}
this.traverse(path);
},
visitWhileStatement: visitLoop("test"),
});
if (changed) {
console.log("Writing", file);
fs.writeFileSync(file, recast.print(ast).code, { encoding: "utf8" });
}
}
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-02-07 14:09:47 -08:00
d0453dc8f4
performance: Use startsWith in many places.
...
Using startsWith is faster than indexOf, especially for long strings
and short prefixes. It's also a lot more readable. The only reason
we weren't using it was when a lot of the code was originally written,
it wasn't available.
2020-01-28 12:47:37 -08:00
0711c7ea49
performance: Avoid dup calls to subscribed_streams().
...
In stream_sort.sort_groups, we now have the caller
pass us in the list of streams, since they are getting
them anyway.
2019-12-30 09:50:22 -08:00
28f3dfa284
js: Automatically convert var to let and const in most files.
...
This commit was originally automatically generated using `tools/lint
--only=eslint --fix`. It was then modified by tabbott to contain only
changes to a set of files that are unlikely to result in significant
merge conflicts with any open pull request, excluding about 20 files.
His plan is to merge the remaining changes with more precise care,
potentially involving merging parts of conflicting pull requests
before running the `eslint --fix` operation.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2019-11-03 12:42:39 -08:00
d17b577d0c
js: Purge useless IIFEs.
...
With webpack, variables declared in each file are already file-local
(Global variables need to be explicitly exported), so these IIFEs are
no longer needed.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
2019-10-25 13:51:21 -07:00
6d255efe4c
app: Prepare JS files for consumption by webpack.
...
This commit prepares the frontend code to be consumed by webpack.
It is a hack: In theory, modules should be declaring and importing the
modules they depend on and the globals they expose directly.
However, that requires significant per-module work, which we don't
really want to block moving our toolchain to webpack on.
So we expose the modules by setting window.varName = varName; as
needed in the js files.
2018-07-05 10:53:36 +02:00
dcb6254a4e
eslint: Enable `no-extra-parens` rule.
...
Following sub-configuration is disabled:
"nestedBinaryExpressions": false,
2018-06-11 07:51:24 -04:00
e9c6f3a07d
stream list: Use newer code for the list cursor.
...
The new list_cursor class is more generic and saves the state
of your cursor across redraws.
Note that we no longer cycle from bottom to top or vice versa.
The node test code that was removed here was kind of complex
and didn't actually assert useful things after calling methods.
2018-04-28 11:15:14 -07:00
e98d7a6ee8
Fix issues with left-sidebar stream search and multiple words.
...
If you typed in more than one word for a stream with multiple words in
it's name, it would not show up in the search list. This fixes that
and adds some more tests covering the entire functionality of the
filter.
2017-09-15 00:22:59 -07:00
f9b3ff8f68
Change argument type for stream_data.is_active().
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The function now takes a "sub" object instead of a stream
name.
2017-04-28 07:39:52 -07:00
7962710132
Remove 40-streams criterion for flagging dormant streams.
...
Before this change, we would move "dormant" streams to the bottom
of your stream sidebar, but only if you had 40+ streams.
Now we do this in all cases to be more consistent.
This commit also changes the redraw strategy when we remove rows.
Before this change, we were doing incremental updates, but now we
call build_stream_list to do a complete rebuild. This was partly
motivated by adding the new divider, which would have complicated
the incrememental approach when you removed the last remaining
dormant stream.
2017-04-19 09:18:18 -07:00
9591b3a95b
Extract stream_sort.js.
2017-04-19 09:16:37 -07:00
Anders Kaseorg
Steve Howell
Armaan Ahluwalia
Shubham Dhama
Sampriti Panda
Steve Howell