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util: remove erroneous whitespace
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When inspecting nested objects some times a whitespace was added at
the end of a line. This fixes this erroneous space.

Besides that the `breakLength` was not followed if a single property
was longer than the breakLength. It will now break a single property
into the key and value in such cases.

PR-URL: #20802
Refs: #20253
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
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@BridgeAR @MylesBorins
BridgeAR authored and MylesBorins committed May 22, 2018
1 parent 5ce85a7 commit 38bc5fb
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Showing 4 changed files with 56 additions and 52 deletions.
82 changes: 42 additions & 40 deletions lib/util.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -416,7 +416,7 @@ function getPrefix(constructor, tag) {
return '';
}

function formatValue(ctx, value, recurseTimes, ln) {
function formatValue(ctx, value, recurseTimes) {
// Primitive types cannot have properties
if (typeof value !== 'object' && typeof value !== 'function') {
return formatPrimitive(ctx.stylize, value, ctx);
Expand Down Expand Up @@ -592,7 +592,7 @@ function formatValue(ctx, value, recurseTimes, ln) {
return ctx.stylize(dateToISOString.call(value), 'date');
}
// Make dates with properties first say the date
base = `${dateToISOString.call(value)}`;
base = dateToISOString.call(value);
} else if (isError(value)) {
// Make error with message first say the error
base = formatError(value);
Expand Down Expand Up @@ -693,7 +693,7 @@ function formatValue(ctx, value, recurseTimes, ln) {
}
ctx.seen.pop();

return reduceToSingleString(ctx, output, base, braces, ln);
return reduceToSingleString(ctx, output, base, braces);
}

function formatNumber(fn, value) {
Expand Down Expand Up @@ -768,7 +768,23 @@ function formatNamespaceObject(ctx, value, recurseTimes, keys) {
const len = keys.length;
const output = new Array(len);
for (var i = 0; i < len; i++) {
output[i] = formatNamespaceProperty(ctx, value, recurseTimes, keys[i]);
try {
output[i] = formatProperty(ctx, value, recurseTimes, keys[i], 0);
} catch (err) {
if (!(err instanceof ReferenceError)) {
throw err;
}
// Use the existing functionality. This makes sure the indentation and
// line breaks are always correct. Otherwise it is very difficult to keep
// this aligned, even though this is a hacky way of dealing with this.
const tmp = { [keys[i]]: '' };
output[i] = formatProperty(ctx, tmp, recurseTimes, keys[i], 0);
const pos = output[i].lastIndexOf(' ');
// We have to find the last whitespace and have to replace that value as
// it will be visualized as a regular string.
output[i] = output[i].slice(0, pos + 1) +
ctx.stylize('<uninitialized>', 'special');
}
}
return output;
}
Expand Down Expand Up @@ -996,42 +1012,21 @@ function formatPromise(ctx, value, recurseTimes, keys) {
return output;
}

function formatKey(ctx, key, enumerable) {
if (typeof key === 'symbol') {
return `[${ctx.stylize(key.toString(), 'symbol')}]`;
}
if (enumerable === false) {
return `[${key}]`;
}
if (keyStrRegExp.test(key)) {
return ctx.stylize(key, 'name');
}
return ctx.stylize(strEscape(key), 'string');
}

function formatNamespaceProperty(ctx, ns, recurseTimes, key) {
let value;
try {
value = formatValue(ctx, ns[key], recurseTimes, true);
} catch (err) {
if (err instanceof ReferenceError) {
value = ctx.stylize('<uninitialized>', 'special');
} else {
throw err;
}
}

return `${formatKey(ctx, key)}: ${value}`;
}

function formatProperty(ctx, value, recurseTimes, key, array) {
let str;
let name, str;
let extra = ' ';
const desc = Object.getOwnPropertyDescriptor(value, key) ||
{ value: value[key], enumerable: true };
if (desc.value !== undefined) {
const diff = array !== 0 || ctx.compact === false ? 2 : 3;
ctx.indentationLvl += diff;
str = formatValue(ctx, desc.value, recurseTimes, array === 0);
str = formatValue(ctx, desc.value, recurseTimes);
if (diff === 3) {
const len = ctx.colors ? removeColors(str).length : str.length;
if (ctx.breakLength < len) {
extra = `\n${' '.repeat(ctx.indentationLvl)}`;
}
}
ctx.indentationLvl -= diff;
} else if (desc.get !== undefined) {
if (desc.set !== undefined) {
Expand All @@ -1047,11 +1042,19 @@ function formatProperty(ctx, value, recurseTimes, key, array) {
if (array === 1) {
return str;
}

return `${formatKey(ctx, key, desc.enumerable)}: ${str}`;
if (typeof key === 'symbol') {
name = `[${ctx.stylize(key.toString(), 'symbol')}]`;
} else if (desc.enumerable === false) {
name = `[${key}]`;
} else if (keyStrRegExp.test(key)) {
name = ctx.stylize(key, 'name');
} else {
name = ctx.stylize(strEscape(key), 'string');
}
return `${name}:${extra}${str}`;
}

function reduceToSingleString(ctx, output, base, braces, addLn) {
function reduceToSingleString(ctx, output, base, braces) {
const breakLength = ctx.breakLength;
let i = 0;
if (ctx.compact === false) {
Expand Down Expand Up @@ -1080,11 +1083,10 @@ function reduceToSingleString(ctx, output, base, braces, addLn) {
// we need to force the first item to be on the next line or the
// items will not line up correctly.
const indentation = ' '.repeat(ctx.indentationLvl);
const extraLn = addLn === true ? `\n${indentation}` : '';
const ln = base === '' && braces[0].length === 1 ?
' ' : `${base ? ` ${base}` : base}\n${indentation} `;
' ' : `${base ? ` ${base}` : ''}\n${indentation} `;
const str = join(output, `,\n${indentation} `);
return `${extraLn}${braces[0]}${ln}${str} ${braces[1]}`;
return `${braces[0]}${ln}${str} ${braces[1]}`;
}

function isBoolean(arg) {
Expand Down
16 changes: 8 additions & 8 deletions test/parallel/test-util-format.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ assert.strictEqual(
util.format('%o', obj),
'{ foo: \'bar\',\n' +
' foobar: 1,\n' +
' func: \n' +
' func:\n' +
' { [Function: func]\n' +
' [length]: 0,\n' +
' [name]: \'func\',\n' +
Expand All @@ -135,8 +135,8 @@ assert.strictEqual(
util.format('%o', nestedObj2),
'{ foo: \'bar\',\n' +
' foobar: 1,\n' +
' func: \n' +
' [ { a: \n' +
' func:\n' +
' [ { a:\n' +
' { [Function: a]\n' +
' [length]: 0,\n' +
' [name]: \'a\',\n' +
Expand All @@ -145,9 +145,9 @@ assert.strictEqual(
assert.strictEqual(
util.format('%o', nestedObj),
'{ foo: \'bar\',\n' +
' foobar: \n' +
' foobar:\n' +
' { foo: \'bar\',\n' +
' func: \n' +
' func:\n' +
' { [Function: func]\n' +
' [length]: 0,\n' +
' [name]: \'func\',\n' +
Expand All @@ -156,14 +156,14 @@ assert.strictEqual(
util.format('%o %o', obj, obj),
'{ foo: \'bar\',\n' +
' foobar: 1,\n' +
' func: \n' +
' func:\n' +
' { [Function: func]\n' +
' [length]: 0,\n' +
' [name]: \'func\',\n' +
' [prototype]: func { [constructor]: [Circular] } } }' +
' { foo: \'bar\',\n' +
' foobar: 1,\n' +
' func: \n' +
' func:\n' +
' { [Function: func]\n' +
' [length]: 0,\n' +
' [name]: \'func\',\n' +
Expand All @@ -172,7 +172,7 @@ assert.strictEqual(
util.format('%o %o', obj),
'{ foo: \'bar\',\n' +
' foobar: 1,\n' +
' func: \n' +
' func:\n' +
' { [Function: func]\n' +
' [length]: 0,\n' +
' [name]: \'func\',\n' +
Expand Down
2 changes: 1 addition & 1 deletion test/parallel/test-util-inspect.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1237,7 +1237,7 @@ util.inspect(process);

let out = util.inspect(o, { compact: true, depth: 5, breakLength: 80 });
let expect = [
'{ a: ',
'{ a:',
' [ 1,',
' 2,',
" [ [ 'Lorem ipsum dolor\\nsit amet,\\tconsectetur adipiscing elit, " +
Expand Down
8 changes: 5 additions & 3 deletions test/parallel/test-whatwg-url-inspect.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,8 @@ const url = new URL('https://username:password@host.name:8080/path/name/?que=ry#
assert.strictEqual(
util.inspect(url),
`URL {
href: 'https://username:password@host.name:8080/path/name/?que=ry#hash',
href:
'https://username:password@host.name:8080/path/name/?que=ry#hash',
origin: 'https://host.name:8080',
protocol: 'https:',
username: 'username',
Expand All @@ -32,7 +33,8 @@ assert.strictEqual(
assert.strictEqual(
util.inspect(url, { showHidden: true }),
`URL {
href: 'https://username:password@host.name:8080/path/name/?que=ry#hash',
href:
'https://username:password@host.name:8080/path/name/?que=ry#hash',
origin: 'https://host.name:8080',
protocol: 'https:',
username: 'username',
Expand All @@ -46,7 +48,7 @@ assert.strictEqual(
hash: '#hash',
cannotBeBase: false,
special: true,
[Symbol(context)]:\x20
[Symbol(context)]:
URLContext {
flags: 2032,
scheme: 'https:',
Expand Down

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