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denoland-deno/cli/rt/02_console.js
Bartek Iwańczuk 8e914be742
build: migrate to dlint (#8176)
This commit migrates repository from using "eslint" 
to "dlint" for linting JavaScript code.
2020-11-03 16:19:29 +01:00

1732 lines
50 KiB
JavaScript

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
((window) => {
const core = window.Deno.core;
const exposeForTest = window.__bootstrap.internals.exposeForTest;
const colors = window.__bootstrap.colors;
function isInvalidDate(x) {
return isNaN(x.getTime());
}
function hasOwnProperty(obj, v) {
if (obj == null) {
return false;
}
return Object.prototype.hasOwnProperty.call(obj, v);
}
// Copyright Joyent, Inc. and other Node contributors. MIT license.
// Forked from Node's lib/internal/cli_table.js
function isTypedArray(x) {
return ArrayBuffer.isView(x) && !(x instanceof DataView);
}
const tableChars = {
middleMiddle: "─",
rowMiddle: "┼",
topRight: "┐",
topLeft: "┌",
leftMiddle: "├",
topMiddle: "┬",
bottomRight: "┘",
bottomLeft: "└",
bottomMiddle: "┴",
rightMiddle: "┤",
left: "│ ",
right: " │",
middle: " │ ",
};
function isFullWidthCodePoint(code) {
// Code points are partially derived from:
// http://www.unicode.org/Public/UNIDATA/EastAsianWidth.txt
return (
code >= 0x1100 &&
(code <= 0x115f || // Hangul Jamo
code === 0x2329 || // LEFT-POINTING ANGLE BRACKET
code === 0x232a || // RIGHT-POINTING ANGLE BRACKET
// CJK Radicals Supplement .. Enclosed CJK Letters and Months
(code >= 0x2e80 && code <= 0x3247 && code !== 0x303f) ||
// Enclosed CJK Letters and Months .. CJK Unified Ideographs Extension A
(code >= 0x3250 && code <= 0x4dbf) ||
// CJK Unified Ideographs .. Yi Radicals
(code >= 0x4e00 && code <= 0xa4c6) ||
// Hangul Jamo Extended-A
(code >= 0xa960 && code <= 0xa97c) ||
// Hangul Syllables
(code >= 0xac00 && code <= 0xd7a3) ||
// CJK Compatibility Ideographs
(code >= 0xf900 && code <= 0xfaff) ||
// Vertical Forms
(code >= 0xfe10 && code <= 0xfe19) ||
// CJK Compatibility Forms .. Small Form Variants
(code >= 0xfe30 && code <= 0xfe6b) ||
// Halfwidth and Fullwidth Forms
(code >= 0xff01 && code <= 0xff60) ||
(code >= 0xffe0 && code <= 0xffe6) ||
// Kana Supplement
(code >= 0x1b000 && code <= 0x1b001) ||
// Enclosed Ideographic Supplement
(code >= 0x1f200 && code <= 0x1f251) ||
// Miscellaneous Symbols and Pictographs 0x1f300 - 0x1f5ff
// Emoticons 0x1f600 - 0x1f64f
(code >= 0x1f300 && code <= 0x1f64f) ||
// CJK Unified Ideographs Extension B .. Tertiary Ideographic Plane
(code >= 0x20000 && code <= 0x3fffd))
);
}
function getStringWidth(str) {
str = colors.stripColor(str).normalize("NFC");
let width = 0;
for (const ch of str) {
width += isFullWidthCodePoint(ch.codePointAt(0)) ? 2 : 1;
}
return width;
}
function renderRow(row, columnWidths) {
let out = tableChars.left;
for (let i = 0; i < row.length; i++) {
const cell = row[i];
const len = getStringWidth(cell);
const needed = (columnWidths[i] - len) / 2;
// round(needed) + ceil(needed) will always add up to the amount
// of spaces we need while also left justifying the output.
out += `${" ".repeat(needed)}${cell}${" ".repeat(Math.ceil(needed))}`;
if (i !== row.length - 1) {
out += tableChars.middle;
}
}
out += tableChars.right;
return out;
}
function cliTable(head, columns) {
const rows = [];
const columnWidths = head.map((h) => getStringWidth(h));
const longestColumn = columns.reduce(
(n, a) => Math.max(n, a.length),
0,
);
for (let i = 0; i < head.length; i++) {
const column = columns[i];
for (let j = 0; j < longestColumn; j++) {
if (rows[j] === undefined) {
rows[j] = [];
}
const value = (rows[j][i] = hasOwnProperty(column, j) ? column[j] : "");
const width = columnWidths[i] || 0;
const counted = getStringWidth(value);
columnWidths[i] = Math.max(width, counted);
}
}
const divider = columnWidths.map((i) =>
tableChars.middleMiddle.repeat(i + 2)
);
let result = `${tableChars.topLeft}${divider.join(tableChars.topMiddle)}` +
`${tableChars.topRight}\n${renderRow(head, columnWidths)}\n` +
`${tableChars.leftMiddle}${divider.join(tableChars.rowMiddle)}` +
`${tableChars.rightMiddle}\n`;
for (const row of rows) {
result += `${renderRow(row, columnWidths)}\n`;
}
result +=
`${tableChars.bottomLeft}${divider.join(tableChars.bottomMiddle)}` +
tableChars.bottomRight;
return result;
}
/* End of forked part */
const DEFAULT_INSPECT_OPTIONS = {
depth: 4,
indentLevel: 0,
sorted: false,
trailingComma: false,
compact: true,
iterableLimit: 100,
showProxy: false,
colors: false,
getters: false,
};
const DEFAULT_INDENT = " "; // Default indent string
const LINE_BREAKING_LENGTH = 80;
const MIN_GROUP_LENGTH = 6;
const STR_ABBREVIATE_SIZE = 100;
const PROMISE_STRING_BASE_LENGTH = 12;
class CSI {
static kClear = "\x1b[1;1H";
static kClearScreenDown = "\x1b[0J";
}
function getClassInstanceName(instance) {
if (typeof instance != "object") {
return "";
}
const constructor = instance?.constructor;
if (typeof constructor == "function") {
return constructor.name ?? "";
}
return "";
}
function maybeColor(fn, inspectOptions) {
return inspectOptions.colors ? fn : (s) => s;
}
function inspectFunction(value, _ctx) {
if (customInspect in value && typeof value[customInspect] === "function") {
try {
return String(value[customInspect]());
} catch {
// pass
}
}
// Might be Function/AsyncFunction/GeneratorFunction/AsyncGeneratorFunction
let cstrName = Object.getPrototypeOf(value)?.constructor?.name;
if (!cstrName) {
// If prototype is removed or broken,
// use generic 'Function' instead.
cstrName = "Function";
}
if (value.name && value.name !== "anonymous") {
// from MDN spec
return `[${cstrName}: ${value.name}]`;
}
return `[${cstrName}]`;
}
function inspectIterable(
value,
ctx,
level,
options,
inspectOptions,
) {
const cyan = maybeColor(colors.cyan, inspectOptions);
if (level >= inspectOptions.depth) {
return cyan(`[${options.typeName}]`);
}
ctx.add(value);
const entries = [];
const iter = value.entries();
let entriesLength = 0;
const next = () => {
return iter.next();
};
for (const el of iter) {
if (entriesLength < inspectOptions.iterableLimit) {
entries.push(
options.entryHandler(
el,
ctx,
level + 1,
inspectOptions,
next.bind(iter),
),
);
}
entriesLength++;
}
ctx.delete(value);
if (options.sort) {
entries.sort();
}
if (entriesLength > inspectOptions.iterableLimit) {
const nmore = entriesLength - inspectOptions.iterableLimit;
entries.push(`... ${nmore} more items`);
}
const iPrefix = `${options.displayName ? options.displayName + " " : ""}`;
const initIndentation = `\n${DEFAULT_INDENT.repeat(level + 1)}`;
const entryIndentation = `,\n${DEFAULT_INDENT.repeat(level + 1)}`;
const closingIndentation = `${inspectOptions.trailingComma ? "," : ""}\n${
DEFAULT_INDENT.repeat(level)
}`;
let iContent;
if (options.group && entries.length > MIN_GROUP_LENGTH) {
const groups = groupEntries(entries, level, value);
iContent = `${initIndentation}${
groups.join(entryIndentation)
}${closingIndentation}`;
} else {
iContent = entries.length === 0 ? "" : ` ${entries.join(", ")} `;
if (
colors.stripColor(iContent).length > LINE_BREAKING_LENGTH ||
!inspectOptions.compact
) {
iContent = `${initIndentation}${
entries.join(entryIndentation)
}${closingIndentation}`;
}
}
return `${iPrefix}${options.delims[0]}${iContent}${options.delims[1]}`;
}
// Ported from Node.js
// Copyright Node.js contributors. All rights reserved.
function groupEntries(
entries,
level,
value,
iterableLimit = 100,
) {
let totalLength = 0;
let maxLength = 0;
let entriesLength = entries.length;
if (iterableLimit < entriesLength) {
// This makes sure the "... n more items" part is not taken into account.
entriesLength--;
}
const separatorSpace = 2; // Add 1 for the space and 1 for the separator.
const dataLen = new Array(entriesLength);
// Calculate the total length of all output entries and the individual max
// entries length of all output entries.
// IN PROGRESS: Colors are being taken into account.
for (let i = 0; i < entriesLength; i++) {
// Taking colors into account: removing the ANSI color
// codes from the string before measuring its length
const len = colors.stripColor(entries[i]).length;
dataLen[i] = len;
totalLength += len + separatorSpace;
if (maxLength < len) maxLength = len;
}
// Add two to `maxLength` as we add a single whitespace character plus a comma
// in-between two entries.
const actualMax = maxLength + separatorSpace;
// Check if at least three entries fit next to each other and prevent grouping
// of arrays that contains entries of very different length (i.e., if a single
// entry is longer than 1/5 of all other entries combined). Otherwise the
// space in-between small entries would be enormous.
if (
actualMax * 3 + (level + 1) < LINE_BREAKING_LENGTH &&
(totalLength / actualMax > 5 || maxLength <= 6)
) {
const approxCharHeights = 2.5;
const averageBias = Math.sqrt(actualMax - totalLength / entries.length);
const biasedMax = Math.max(actualMax - 3 - averageBias, 1);
// Dynamically check how many columns seem possible.
const columns = Math.min(
// Ideally a square should be drawn. We expect a character to be about 2.5
// times as high as wide. This is the area formula to calculate a square
// which contains n rectangles of size `actualMax * approxCharHeights`.
// Divide that by `actualMax` to receive the correct number of columns.
// The added bias increases the columns for short entries.
Math.round(
Math.sqrt(approxCharHeights * biasedMax * entriesLength) / biasedMax,
),
// Do not exceed the breakLength.
Math.floor((LINE_BREAKING_LENGTH - (level + 1)) / actualMax),
// Limit the columns to a maximum of fifteen.
15,
);
// Return with the original output if no grouping should happen.
if (columns <= 1) {
return entries;
}
const tmp = [];
const maxLineLength = [];
for (let i = 0; i < columns; i++) {
let lineMaxLength = 0;
for (let j = i; j < entries.length; j += columns) {
if (dataLen[j] > lineMaxLength) lineMaxLength = dataLen[j];
}
lineMaxLength += separatorSpace;
maxLineLength[i] = lineMaxLength;
}
let order = "padStart";
if (value !== undefined) {
for (let i = 0; i < entries.length; i++) {
if (
typeof value[i] !== "number" &&
typeof value[i] !== "bigint"
) {
order = "padEnd";
break;
}
}
}
// Each iteration creates a single line of grouped entries.
for (let i = 0; i < entriesLength; i += columns) {
// The last lines may contain less entries than columns.
const max = Math.min(i + columns, entriesLength);
let str = "";
let j = i;
for (; j < max - 1; j++) {
const lengthOfColorCodes = entries[j].length - dataLen[j];
const padding = maxLineLength[j - i] + lengthOfColorCodes;
str += `${entries[j]}, `[order](padding, " ");
}
if (order === "padStart") {
const lengthOfColorCodes = entries[j].length - dataLen[j];
const padding = maxLineLength[j - i] +
lengthOfColorCodes -
separatorSpace;
str += entries[j].padStart(padding, " ");
} else {
str += entries[j];
}
tmp.push(str);
}
if (iterableLimit < entries.length) {
tmp.push(entries[entriesLength]);
}
entries = tmp;
}
return entries;
}
function inspectValue(
value,
ctx,
level,
inspectOptions,
) {
const proxyDetails = core.getProxyDetails(value);
if (proxyDetails != null) {
return inspectOptions.showProxy
? inspectProxy(proxyDetails, ctx, level, inspectOptions)
: inspectValue(proxyDetails[0], ctx, level, inspectOptions);
}
const green = maybeColor(colors.green, inspectOptions);
const yellow = maybeColor(colors.yellow, inspectOptions);
const dim = maybeColor(colors.dim, inspectOptions);
const cyan = maybeColor(colors.cyan, inspectOptions);
const bold = maybeColor(colors.bold, inspectOptions);
const red = maybeColor(colors.red, inspectOptions);
switch (typeof value) {
case "string":
return green(quoteString(value));
case "number": // Numbers are yellow
// Special handling of -0
return yellow(Object.is(value, -0) ? "-0" : `${value}`);
case "boolean": // booleans are yellow
return yellow(String(value));
case "undefined": // undefined is dim
return dim(String(value));
case "symbol": // Symbols are green
return green(maybeQuoteSymbol(value));
case "bigint": // Bigints are yellow
return yellow(`${value}n`);
case "function": // Function string is cyan
return cyan(inspectFunction(value, ctx));
case "object": // null is bold
if (value === null) {
return bold("null");
}
if (ctx.has(value)) {
// Circular string is cyan
return cyan("[Circular]");
}
return inspectObject(value, ctx, level, inspectOptions);
default:
// Not implemented is red
return red("[Not Implemented]");
}
}
// We can match Node's quoting behavior exactly by swapping the double quote and
// single quote in this array. That would give preference to single quotes.
// However, we prefer double quotes as the default.
const QUOTES = ['"', "'", "`"];
/** Surround the string in quotes.
*
* The quote symbol is chosen by taking the first of the `QUOTES` array which
* does not occur in the string. If they all occur, settle with `QUOTES[0]`.
*
* Insert a backslash before any occurrence of the chosen quote symbol and
* before any backslash.
*/
function quoteString(string) {
const quote = QUOTES.find((c) => !string.includes(c)) ?? QUOTES[0];
const escapePattern = new RegExp(`(?=[${quote}\\\\])`, "g");
string = string.replace(escapePattern, "\\");
string = replaceEscapeSequences(string);
return `${quote}${string}${quote}`;
}
// Replace escape sequences that can modify output.
function replaceEscapeSequences(string) {
return string
.replace(/[\b]/g, "\\b")
.replace(/\f/g, "\\f")
.replace(/\n/g, "\\n")
.replace(/\r/g, "\\r")
.replace(/\t/g, "\\t")
.replace(/\v/g, "\\v")
.replace(
// deno-lint-ignore no-control-regex
/[\x00-\x1f\x7f-\x9f]/g,
(c) => "\\x" + c.charCodeAt(0).toString(16).padStart(2, "0"),
);
}
// Surround a string with quotes when it is required (e.g the string not a valid identifier).
function maybeQuoteString(string) {
if (/^[a-zA-Z_][a-zA-Z_0-9]*$/.test(string)) {
return replaceEscapeSequences(string);
}
return quoteString(string);
}
// Surround a symbol's description in quotes when it is required (e.g the description has non printable characters).
function maybeQuoteSymbol(symbol) {
if (symbol.description === undefined) {
return symbol.toString();
}
if (/^[a-zA-Z_][a-zA-Z_.0-9]*$/.test(symbol.description)) {
return symbol.toString();
}
return `Symbol(${quoteString(symbol.description)})`;
}
// Print strings when they are inside of arrays or objects with quotes
function inspectValueWithQuotes(
value,
ctx,
level,
inspectOptions,
) {
const green = maybeColor(colors.green, inspectOptions);
switch (typeof value) {
case "string": {
const trunc = value.length > STR_ABBREVIATE_SIZE
? value.slice(0, STR_ABBREVIATE_SIZE) + "..."
: value;
return green(quoteString(trunc)); // Quoted strings are green
}
default:
return inspectValue(value, ctx, level, inspectOptions);
}
}
function inspectArray(
value,
ctx,
level,
inspectOptions,
) {
const dim = maybeColor(colors.dim, inspectOptions);
const options = {
typeName: "Array",
displayName: "",
delims: ["[", "]"],
entryHandler: (entry, ctx, level, inspectOptions, next) => {
const [index, val] = entry;
let i = index;
if (!value.hasOwnProperty(i)) {
i++;
while (!value.hasOwnProperty(i) && i < value.length) {
next();
i++;
}
const emptyItems = i - index;
const ending = emptyItems > 1 ? "s" : "";
return dim(`<${emptyItems} empty item${ending}>`);
} else {
return inspectValueWithQuotes(val, ctx, level, inspectOptions);
}
},
group: inspectOptions.compact,
sort: false,
};
return inspectIterable(value, ctx, level, options, inspectOptions);
}
function inspectTypedArray(
typedArrayName,
value,
ctx,
level,
inspectOptions,
) {
const valueLength = value.length;
const options = {
typeName: typedArrayName,
displayName: `${typedArrayName}(${valueLength})`,
delims: ["[", "]"],
entryHandler: (entry, ctx, level, inspectOptions) => {
const val = entry[1];
return inspectValueWithQuotes(val, ctx, level + 1, inspectOptions);
},
group: inspectOptions.compact,
sort: false,
};
return inspectIterable(value, ctx, level, options, inspectOptions);
}
function inspectSet(
value,
ctx,
level,
inspectOptions,
) {
const options = {
typeName: "Set",
displayName: "Set",
delims: ["{", "}"],
entryHandler: (entry, ctx, level, inspectOptions) => {
const val = entry[1];
return inspectValueWithQuotes(val, ctx, level + 1, inspectOptions);
},
group: false,
sort: inspectOptions.sorted,
};
return inspectIterable(value, ctx, level, options, inspectOptions);
}
function inspectMap(
value,
ctx,
level,
inspectOptions,
) {
const options = {
typeName: "Map",
displayName: "Map",
delims: ["{", "}"],
entryHandler: (entry, ctx, level, inspectOptions) => {
const [key, val] = entry;
return `${
inspectValueWithQuotes(
key,
ctx,
level + 1,
inspectOptions,
)
} => ${inspectValueWithQuotes(val, ctx, level + 1, inspectOptions)}`;
},
group: false,
sort: inspectOptions.sorted,
};
return inspectIterable(
value,
ctx,
level,
options,
inspectOptions,
);
}
function inspectWeakSet(inspectOptions) {
const cyan = maybeColor(colors.cyan, inspectOptions);
return `WeakSet { ${cyan("[items unknown]")} }`; // as seen in Node, with cyan color
}
function inspectWeakMap(inspectOptions) {
const cyan = maybeColor(colors.cyan, inspectOptions);
return `WeakMap { ${cyan("[items unknown]")} }`; // as seen in Node, with cyan color
}
function inspectDate(value, inspectOptions) {
// without quotes, ISO format, in magenta like before
const magenta = maybeColor(colors.magenta, inspectOptions);
return magenta(isInvalidDate(value) ? "Invalid Date" : value.toISOString());
}
function inspectRegExp(value, inspectOptions) {
const red = maybeColor(colors.red, inspectOptions);
return red(value.toString()); // RegExps are red
}
function inspectStringObject(value, inspectOptions) {
const cyan = maybeColor(colors.cyan, inspectOptions);
return cyan(`[String: "${value.toString()}"]`); // wrappers are in cyan
}
function inspectBooleanObject(value, inspectOptions) {
const cyan = maybeColor(colors.cyan, inspectOptions);
return cyan(`[Boolean: ${value.toString()}]`); // wrappers are in cyan
}
function inspectNumberObject(value, inspectOptions) {
const cyan = maybeColor(colors.cyan, inspectOptions);
return cyan(`[Number: ${value.toString()}]`); // wrappers are in cyan
}
const PromiseState = {
Pending: 0,
Fulfilled: 1,
Rejected: 2,
};
function inspectPromise(
value,
ctx,
level,
inspectOptions,
) {
const cyan = maybeColor(colors.cyan, inspectOptions);
const red = maybeColor(colors.red, inspectOptions);
const [state, result] = core.getPromiseDetails(value);
if (state === PromiseState.Pending) {
return `Promise { ${cyan("<pending>")} }`;
}
const prefix = state === PromiseState.Fulfilled
? ""
: `${red("<rejected>")} `;
const str = `${prefix}${
inspectValueWithQuotes(
result,
ctx,
level + 1,
inspectOptions,
)
}`;
if (str.length + PROMISE_STRING_BASE_LENGTH > LINE_BREAKING_LENGTH) {
return `Promise {\n${DEFAULT_INDENT.repeat(level + 1)}${str}\n}`;
}
return `Promise { ${str} }`;
}
function inspectProxy(
targetAndHandler,
ctx,
level,
inspectOptions,
) {
return `Proxy ${
inspectArray(targetAndHandler, ctx, level, inspectOptions)
}`;
}
function inspectRawObject(
value,
ctx,
level,
inspectOptions,
) {
const cyan = maybeColor(colors.cyan, inspectOptions);
if (level >= inspectOptions.depth) {
return cyan("[Object]"); // wrappers are in cyan
}
ctx.add(value);
let baseString;
let shouldShowDisplayName = false;
let displayName = value[
Symbol.toStringTag
];
if (!displayName) {
displayName = getClassInstanceName(value);
}
if (
displayName && displayName !== "Object" && displayName !== "anonymous"
) {
shouldShowDisplayName = true;
}
const entries = [];
const stringKeys = Object.keys(value);
const symbolKeys = Object.getOwnPropertySymbols(value);
if (inspectOptions.sorted) {
stringKeys.sort();
symbolKeys.sort((s1, s2) =>
(s1.description ?? "").localeCompare(s2.description ?? "")
);
}
const red = maybeColor(colors.red, inspectOptions);
for (const key of stringKeys) {
if (inspectOptions.getters) {
let propertyValue;
let error = null;
try {
propertyValue = value[key];
} catch (error_) {
error = error_;
}
const inspectedValue = error == null
? inspectValueWithQuotes(
propertyValue,
ctx,
level + 1,
inspectOptions,
)
: red(`[Thrown ${error.name}: ${error.message}]`);
entries.push(`${maybeQuoteString(key)}: ${inspectedValue}`);
} else {
const descriptor = Object.getOwnPropertyDescriptor(value, key);
if (descriptor.get !== undefined && descriptor.set !== undefined) {
entries.push(`${maybeQuoteString(key)}: [Getter/Setter]`);
} else if (descriptor.get !== undefined) {
entries.push(`${maybeQuoteString(key)}: [Getter]`);
} else {
entries.push(
`${maybeQuoteString(key)}: ${
inspectValueWithQuotes(value[key], ctx, level + 1, inspectOptions)
}`,
);
}
}
}
for (const key of symbolKeys) {
if (inspectOptions.getters) {
let propertyValue;
let error;
try {
propertyValue = value[key];
} catch (error_) {
error = error_;
}
const inspectedValue = error == null
? inspectValueWithQuotes(
propertyValue,
ctx,
level + 1,
inspectOptions,
)
: red(`Thrown ${error.name}: ${error.message}`);
entries.push(`[${maybeQuoteSymbol(key)}]: ${inspectedValue}`);
} else {
const descriptor = Object.getOwnPropertyDescriptor(value, key);
if (descriptor.get !== undefined && descriptor.set !== undefined) {
entries.push(`[${maybeQuoteSymbol(key)}]: [Getter/Setter]`);
} else if (descriptor.get !== undefined) {
entries.push(`[${maybeQuoteSymbol(key)}]: [Getter]`);
} else {
entries.push(
`[${maybeQuoteSymbol(key)}]: ${
inspectValueWithQuotes(value[key], ctx, level + 1, inspectOptions)
}`,
);
}
}
}
// Making sure color codes are ignored when calculating the total length
const totalLength = entries.length + level +
colors.stripColor(entries.join("")).length;
ctx.delete(value);
if (entries.length === 0) {
baseString = "{}";
} else if (totalLength > LINE_BREAKING_LENGTH || !inspectOptions.compact) {
const entryIndent = DEFAULT_INDENT.repeat(level + 1);
const closingIndent = DEFAULT_INDENT.repeat(level);
baseString = `{\n${entryIndent}${entries.join(`,\n${entryIndent}`)}${
inspectOptions.trailingComma ? "," : ""
}\n${closingIndent}}`;
} else {
baseString = `{ ${entries.join(", ")} }`;
}
if (shouldShowDisplayName) {
baseString = `${displayName} ${baseString}`;
}
return baseString;
}
function inspectObject(
value,
consoleContext,
level,
inspectOptions,
) {
if (customInspect in value && typeof value[customInspect] === "function") {
try {
return String(value[customInspect]());
} catch {
// pass
}
}
// This non-unique symbol is used to support op_crates, ie.
// in op_crates/web we don't want to depend on unique "Deno.customInspect"
// symbol defined in the public API. Internal only, shouldn't be used
// by users.
const nonUniqueCustomInspect = Symbol.for("Deno.customInspect");
if (
nonUniqueCustomInspect in value &&
typeof value[nonUniqueCustomInspect] === "function"
) {
try {
return String(value[nonUniqueCustomInspect]());
} catch {
// pass
}
}
if (value instanceof Error) {
return String(value.stack);
} else if (Array.isArray(value)) {
return inspectArray(value, consoleContext, level, inspectOptions);
} else if (value instanceof Number) {
return inspectNumberObject(value, inspectOptions);
} else if (value instanceof Boolean) {
return inspectBooleanObject(value, inspectOptions);
} else if (value instanceof String) {
return inspectStringObject(value, inspectOptions);
} else if (value instanceof Promise) {
return inspectPromise(value, consoleContext, level, inspectOptions);
} else if (value instanceof RegExp) {
return inspectRegExp(value, inspectOptions);
} else if (value instanceof Date) {
return inspectDate(value, inspectOptions);
} else if (value instanceof Set) {
return inspectSet(value, consoleContext, level, inspectOptions);
} else if (value instanceof Map) {
return inspectMap(value, consoleContext, level, inspectOptions);
} else if (value instanceof WeakSet) {
return inspectWeakSet(inspectOptions);
} else if (value instanceof WeakMap) {
return inspectWeakMap(inspectOptions);
} else if (isTypedArray(value)) {
return inspectTypedArray(
Object.getPrototypeOf(value).constructor.name,
value,
consoleContext,
level,
inspectOptions,
);
} else {
// Otherwise, default object formatting
return inspectRawObject(value, consoleContext, level, inspectOptions);
}
}
const colorKeywords = new Map([
["black", "#000000"],
["silver", "#c0c0c0"],
["gray", "#808080"],
["white", "#ffffff"],
["maroon", "#800000"],
["red", "#ff0000"],
["purple", "#800080"],
["fuchsia", "#ff00ff"],
["green", "#008000"],
["lime", "#00ff00"],
["olive", "#808000"],
["yellow", "#ffff00"],
["navy", "#000080"],
["blue", "#0000ff"],
["teal", "#008080"],
["aqua", "#00ffff"],
["orange", "#ffa500"],
["aliceblue", "#f0f8ff"],
["antiquewhite", "#faebd7"],
["aquamarine", "#7fffd4"],
["azure", "#f0ffff"],
["beige", "#f5f5dc"],
["bisque", "#ffe4c4"],
["blanchedalmond", "#ffebcd"],
["blueviolet", "#8a2be2"],
["brown", "#a52a2a"],
["burlywood", "#deb887"],
["cadetblue", "#5f9ea0"],
["chartreuse", "#7fff00"],
["chocolate", "#d2691e"],
["coral", "#ff7f50"],
["cornflowerblue", "#6495ed"],
["cornsilk", "#fff8dc"],
["crimson", "#dc143c"],
["cyan", "#00ffff"],
["darkblue", "#00008b"],
["darkcyan", "#008b8b"],
["darkgoldenrod", "#b8860b"],
["darkgray", "#a9a9a9"],
["darkgreen", "#006400"],
["darkgrey", "#a9a9a9"],
["darkkhaki", "#bdb76b"],
["darkmagenta", "#8b008b"],
["darkolivegreen", "#556b2f"],
["darkorange", "#ff8c00"],
["darkorchid", "#9932cc"],
["darkred", "#8b0000"],
["darksalmon", "#e9967a"],
["darkseagreen", "#8fbc8f"],
["darkslateblue", "#483d8b"],
["darkslategray", "#2f4f4f"],
["darkslategrey", "#2f4f4f"],
["darkturquoise", "#00ced1"],
["darkviolet", "#9400d3"],
["deeppink", "#ff1493"],
["deepskyblue", "#00bfff"],
["dimgray", "#696969"],
["dimgrey", "#696969"],
["dodgerblue", "#1e90ff"],
["firebrick", "#b22222"],
["floralwhite", "#fffaf0"],
["forestgreen", "#228b22"],
["gainsboro", "#dcdcdc"],
["ghostwhite", "#f8f8ff"],
["gold", "#ffd700"],
["goldenrod", "#daa520"],
["greenyellow", "#adff2f"],
["grey", "#808080"],
["honeydew", "#f0fff0"],
["hotpink", "#ff69b4"],
["indianred", "#cd5c5c"],
["indigo", "#4b0082"],
["ivory", "#fffff0"],
["khaki", "#f0e68c"],
["lavender", "#e6e6fa"],
["lavenderblush", "#fff0f5"],
["lawngreen", "#7cfc00"],
["lemonchiffon", "#fffacd"],
["lightblue", "#add8e6"],
["lightcoral", "#f08080"],
["lightcyan", "#e0ffff"],
["lightgoldenrodyellow", "#fafad2"],
["lightgray", "#d3d3d3"],
["lightgreen", "#90ee90"],
["lightgrey", "#d3d3d3"],
["lightpink", "#ffb6c1"],
["lightsalmon", "#ffa07a"],
["lightseagreen", "#20b2aa"],
["lightskyblue", "#87cefa"],
["lightslategray", "#778899"],
["lightslategrey", "#778899"],
["lightsteelblue", "#b0c4de"],
["lightyellow", "#ffffe0"],
["limegreen", "#32cd32"],
["linen", "#faf0e6"],
["magenta", "#ff00ff"],
["mediumaquamarine", "#66cdaa"],
["mediumblue", "#0000cd"],
["mediumorchid", "#ba55d3"],
["mediumpurple", "#9370db"],
["mediumseagreen", "#3cb371"],
["mediumslateblue", "#7b68ee"],
["mediumspringgreen", "#00fa9a"],
["mediumturquoise", "#48d1cc"],
["mediumvioletred", "#c71585"],
["midnightblue", "#191970"],
["mintcream", "#f5fffa"],
["mistyrose", "#ffe4e1"],
["moccasin", "#ffe4b5"],
["navajowhite", "#ffdead"],
["oldlace", "#fdf5e6"],
["olivedrab", "#6b8e23"],
["orangered", "#ff4500"],
["orchid", "#da70d6"],
["palegoldenrod", "#eee8aa"],
["palegreen", "#98fb98"],
["paleturquoise", "#afeeee"],
["palevioletred", "#db7093"],
["papayawhip", "#ffefd5"],
["peachpuff", "#ffdab9"],
["peru", "#cd853f"],
["pink", "#ffc0cb"],
["plum", "#dda0dd"],
["powderblue", "#b0e0e6"],
["rosybrown", "#bc8f8f"],
["royalblue", "#4169e1"],
["saddlebrown", "#8b4513"],
["salmon", "#fa8072"],
["sandybrown", "#f4a460"],
["seagreen", "#2e8b57"],
["seashell", "#fff5ee"],
["sienna", "#a0522d"],
["skyblue", "#87ceeb"],
["slateblue", "#6a5acd"],
["slategray", "#708090"],
["slategrey", "#708090"],
["snow", "#fffafa"],
["springgreen", "#00ff7f"],
["steelblue", "#4682b4"],
["tan", "#d2b48c"],
["thistle", "#d8bfd8"],
["tomato", "#ff6347"],
["turquoise", "#40e0d0"],
["violet", "#ee82ee"],
["wheat", "#f5deb3"],
["whitesmoke", "#f5f5f5"],
["yellowgreen", "#9acd32"],
["rebeccapurple", "#663399"],
]);
function parseCssColor(colorString) {
if (colorKeywords.has(colorString)) {
colorString = colorKeywords.get(colorString);
}
// deno-fmt-ignore
const hashMatch = colorString.match(/^#([\dA-Fa-f]{2})([\dA-Fa-f]{2})([\dA-Fa-f]{2})([\dA-Fa-f]{2})?$/);
if (hashMatch != null) {
return [
Number(`0x${hashMatch[1]}`),
Number(`0x${hashMatch[2]}`),
Number(`0x${hashMatch[3]}`),
];
}
// deno-fmt-ignore
const smallHashMatch = colorString.match(/^#([\dA-Fa-f])([\dA-Fa-f])([\dA-Fa-f])([\dA-Fa-f])?$/);
if (smallHashMatch != null) {
return [
Number(`0x${smallHashMatch[1]}0`),
Number(`0x${smallHashMatch[2]}0`),
Number(`0x${smallHashMatch[3]}0`),
];
}
// deno-fmt-ignore
const rgbMatch = colorString.match(/^rgba?\(\s*([+\-]?\d*\.?\d+)\s*,\s*([+\-]?\d*\.?\d+)\s*,\s*([+\-]?\d*\.?\d+)\s*(,\s*([+\-]?\d*\.?\d+)\s*)?\)$/);
if (rgbMatch != null) {
return [
Math.round(Math.max(0, Math.min(255, Number(rgbMatch[1])))),
Math.round(Math.max(0, Math.min(255, Number(rgbMatch[2])))),
Math.round(Math.max(0, Math.min(255, Number(rgbMatch[3])))),
];
}
// deno-fmt-ignore
const hslMatch = colorString.match(/^hsla?\(\s*([+\-]?\d*\.?\d+)\s*,\s*([+\-]?\d*\.?\d+)%\s*,\s*([+\-]?\d*\.?\d+)%\s*(,\s*([+\-]?\d*\.?\d+)\s*)?\)$/);
if (hslMatch != null) {
// https://www.rapidtables.com/convert/color/hsl-to-rgb.html
let h = Number(hslMatch[1]) % 360;
if (h < 0) {
h += 360;
}
const s = Math.max(0, Math.min(100, Number(hslMatch[2]))) / 100;
const l = Math.max(0, Math.min(100, Number(hslMatch[3]))) / 100;
const c = (1 - Math.abs(2 * l - 1)) * s;
const x = c * (1 - Math.abs((h / 60) % 2 - 1));
const m = l - c / 2;
let r_;
let g_;
let b_;
if (h < 60) {
[r_, g_, b_] = [c, x, 0];
} else if (h < 120) {
[r_, g_, b_] = [x, c, 0];
} else if (h < 180) {
[r_, g_, b_] = [0, c, x];
} else if (h < 240) {
[r_, g_, b_] = [0, x, c];
} else if (h < 300) {
[r_, g_, b_] = [x, 0, c];
} else {
[r_, g_, b_] = [c, 0, x];
}
return [
Math.round((r_ + m) * 255),
Math.round((g_ + m) * 255),
Math.round((b_ + m) * 255),
];
}
return null;
}
function getDefaultCss() {
return {
backgroundColor: null,
color: null,
fontWeight: null,
fontStyle: null,
textDecorationColor: null,
textDecorationLine: [],
};
}
function parseCss(cssString) {
const css = getDefaultCss();
const rawEntries = [];
let inValue = false;
let currentKey = null;
let parenthesesDepth = 0;
let currentPart = "";
for (let i = 0; i < cssString.length; i++) {
const c = cssString[i];
if (c == "(") {
parenthesesDepth++;
} else if (parenthesesDepth > 0) {
if (c == ")") {
parenthesesDepth--;
}
} else if (inValue) {
if (c == ";") {
const value = currentPart.trim();
if (value != "") {
rawEntries.push([currentKey, value]);
}
currentKey = null;
currentPart = "";
inValue = false;
continue;
}
} else if (c == ":") {
currentKey = currentPart.trim();
currentPart = "";
inValue = true;
continue;
}
currentPart += c;
}
if (inValue && parenthesesDepth == 0) {
const value = currentPart.trim();
if (value != "") {
rawEntries.push([currentKey, value]);
}
currentKey = null;
currentPart = "";
}
for (const [key, value] of rawEntries) {
if (key == "background-color") {
const color = parseCssColor(value);
if (color != null) {
css.backgroundColor = color;
}
} else if (key == "color") {
const color = parseCssColor(value);
if (color != null) {
css.color = color;
}
} else if (key == "font-weight") {
if (value == "bold") {
css.fontWeight = value;
}
} else if (key == "font-style") {
if (["italic", "oblique", "oblique 14deg"].includes(value)) {
css.fontStyle = "italic";
}
} else if (key == "text-decoration-line") {
css.textDecorationLine = [];
for (const lineType of value.split(/\s+/g)) {
if (["line-through", "overline", "underline"].includes(lineType)) {
css.textDecorationLine.push(lineType);
}
}
} else if (key == "text-decoration-color") {
const color = parseCssColor(value);
if (color != null) {
css.textDecorationColor = color;
}
} else if (key == "text-decoration") {
css.textDecorationColor = null;
css.textDecorationLine = [];
for (const arg of value.split(/\s+/g)) {
const maybeColor = parseCssColor(arg);
if (maybeColor != null) {
css.textDecorationColor = maybeColor;
} else if (["line-through", "overline", "underline"].includes(arg)) {
css.textDecorationLine.push(arg);
}
}
}
}
return css;
}
function colorEquals(color1, color2) {
return color1?.[0] == color2?.[0] && color1?.[1] == color2?.[1] &&
color1?.[2] == color2?.[2];
}
function cssToAnsi(css, prevCss = null) {
prevCss = prevCss ?? getDefaultCss();
let ansi = "";
if (!colorEquals(css.backgroundColor, prevCss.backgroundColor)) {
if (css.backgroundColor != null) {
const [r, g, b] = css.backgroundColor;
ansi += `\x1b[48;2;${r};${g};${b}m`;
} else {
ansi += "\x1b[49m";
}
}
if (!colorEquals(css.color, prevCss.color)) {
if (css.color != null) {
const [r, g, b] = css.color;
ansi += `\x1b[38;2;${r};${g};${b}m`;
} else {
ansi += "\x1b[39m";
}
}
if (css.fontWeight != prevCss.fontWeight) {
if (css.fontWeight == "bold") {
ansi += `\x1b[1m`;
} else {
ansi += "\x1b[22m";
}
}
if (css.fontStyle != prevCss.fontStyle) {
if (css.fontStyle == "italic") {
ansi += `\x1b[3m`;
} else {
ansi += "\x1b[23m";
}
}
if (!colorEquals(css.textDecorationColor, prevCss.textDecorationColor)) {
if (css.textDecorationColor != null) {
const [r, g, b] = css.textDecorationColor;
ansi += `\x1b[58;2;${r};${g};${b}m`;
} else {
ansi += "\x1b[59m";
}
}
if (
css.textDecorationLine.includes("line-through") !=
prevCss.textDecorationLine.includes("line-through")
) {
if (css.textDecorationLine.includes("line-through")) {
ansi += "\x1b[9m";
} else {
ansi += "\x1b[29m";
}
}
if (
css.textDecorationLine.includes("overline") !=
prevCss.textDecorationLine.includes("overline")
) {
if (css.textDecorationLine.includes("overline")) {
ansi += "\x1b[53m";
} else {
ansi += "\x1b[55m";
}
}
if (
css.textDecorationLine.includes("underline") !=
prevCss.textDecorationLine.includes("underline")
) {
if (css.textDecorationLine.includes("underline")) {
ansi += "\x1b[4m";
} else {
ansi += "\x1b[24m";
}
}
return ansi;
}
function inspectArgs(args, inspectOptions = {}) {
const noColor = globalThis.Deno?.noColor ?? true;
const rInspectOptions = { ...DEFAULT_INSPECT_OPTIONS, ...inspectOptions };
const first = args[0];
let a = 0;
let string = "";
if (typeof first == "string" && args.length > 1) {
a++;
// Index of the first not-yet-appended character. Use this so we only
// have to append to `string` when a substitution occurs / at the end.
let appendedChars = 0;
let usedStyle = false;
let prevCss = null;
for (let i = 0; i < first.length - 1; i++) {
if (first[i] == "%") {
const char = first[++i];
if (a < args.length) {
let formattedArg = null;
if (char == "s") {
// Format as a string.
formattedArg = String(args[a++]);
} else if (["d", "i"].includes(char)) {
// Format as an integer.
const value = args[a++];
if (typeof value == "bigint") {
formattedArg = `${value}n`;
} else if (typeof value == "number") {
formattedArg = `${parseInt(String(value))}`;
} else {
formattedArg = "NaN";
}
} else if (char == "f") {
// Format as a floating point value.
const value = args[a++];
if (typeof value == "number") {
formattedArg = `${value}`;
} else {
formattedArg = "NaN";
}
} else if (["O", "o"].includes(char)) {
// Format as an object.
formattedArg = inspectValue(
args[a++],
new Set(),
0,
rInspectOptions,
);
} else if (char == "c") {
const value = args[a++];
if (!noColor) {
const css = parseCss(value);
formattedArg = cssToAnsi(css, prevCss);
if (formattedArg != "") {
usedStyle = true;
prevCss = css;
}
} else {
formattedArg = "";
}
}
if (formattedArg != null) {
string += first.slice(appendedChars, i - 1) + formattedArg;
appendedChars = i + 1;
}
}
if (char == "%") {
string += first.slice(appendedChars, i - 1) + "%";
appendedChars = i + 1;
}
}
}
string += first.slice(appendedChars);
if (usedStyle) {
string += "\x1b[0m";
}
}
for (; a < args.length; a++) {
if (a > 0) {
string += " ";
}
if (typeof args[a] == "string") {
string += args[a];
} else {
// Use default maximum depth for null or undefined arguments.
string += inspectValue(args[a], new Set(), 0, rInspectOptions);
}
}
if (rInspectOptions.indentLevel > 0) {
const groupIndent = DEFAULT_INDENT.repeat(rInspectOptions.indentLevel);
string = groupIndent + string.replaceAll("\n", `\n${groupIndent}`);
}
return string;
}
const countMap = new Map();
const timerMap = new Map();
const isConsoleInstance = Symbol("isConsoleInstance");
function getConsoleInspectOptions() {
return {
...DEFAULT_INSPECT_OPTIONS,
colors: !(globalThis.Deno?.noColor ?? false),
};
}
class Console {
#printFunc = null;
[isConsoleInstance] = false;
constructor(printFunc) {
this.#printFunc = printFunc;
this.indentLevel = 0;
this[isConsoleInstance] = true;
// ref https://console.spec.whatwg.org/#console-namespace
// For historical web-compatibility reasons, the namespace object for
// console must have as its [[Prototype]] an empty object, created as if
// by ObjectCreate(%ObjectPrototype%), instead of %ObjectPrototype%.
const console = Object.create({});
Object.assign(console, this);
return console;
}
log = (...args) => {
this.#printFunc(
inspectArgs(args, {
...getConsoleInspectOptions(),
indentLevel: this.indentLevel,
}) + "\n",
false,
);
};
debug = this.log;
info = this.log;
dir = (obj, options = {}) => {
this.#printFunc(
inspectArgs([obj], { ...getConsoleInspectOptions(), ...options }) +
"\n",
false,
);
};
dirxml = this.dir;
warn = (...args) => {
this.#printFunc(
inspectArgs(args, {
...getConsoleInspectOptions(),
indentLevel: this.indentLevel,
}) + "\n",
true,
);
};
error = this.warn;
assert = (condition = false, ...args) => {
if (condition) {
return;
}
if (args.length === 0) {
this.error("Assertion failed");
return;
}
const [first, ...rest] = args;
if (typeof first === "string") {
this.error(`Assertion failed: ${first}`, ...rest);
return;
}
this.error(`Assertion failed:`, ...args);
};
count = (label = "default") => {
label = String(label);
if (countMap.has(label)) {
const current = countMap.get(label) || 0;
countMap.set(label, current + 1);
} else {
countMap.set(label, 1);
}
this.info(`${label}: ${countMap.get(label)}`);
};
countReset = (label = "default") => {
label = String(label);
if (countMap.has(label)) {
countMap.set(label, 0);
} else {
this.warn(`Count for '${label}' does not exist`);
}
};
table = (data, properties) => {
if (properties !== undefined && !Array.isArray(properties)) {
throw new Error(
"The 'properties' argument must be of type Array. " +
"Received type string",
);
}
if (data === null || typeof data !== "object") {
return this.log(data);
}
const objectValues = {};
const indexKeys = [];
const values = [];
const stringifyValue = (value) =>
inspectValueWithQuotes(value, new Set(), 0, {
...DEFAULT_INSPECT_OPTIONS,
depth: 1,
});
const toTable = (header, body) => this.log(cliTable(header, body));
const createColumn = (value, shift) => [
...(shift ? [...new Array(shift)].map(() => "") : []),
stringifyValue(value),
];
let resultData;
const isSet = data instanceof Set;
const isMap = data instanceof Map;
const valuesKey = "Values";
const indexKey = isSet || isMap ? "(iter idx)" : "(idx)";
if (data instanceof Set) {
resultData = [...data];
} else if (data instanceof Map) {
let idx = 0;
resultData = {};
data.forEach((v, k) => {
resultData[idx] = { Key: k, Values: v };
idx++;
});
} else {
resultData = data;
}
let hasPrimitives = false;
Object.keys(resultData).forEach((k, idx) => {
const value = resultData[k];
const primitive = value === null ||
(typeof value !== "function" && typeof value !== "object");
if (properties === undefined && primitive) {
hasPrimitives = true;
values.push(stringifyValue(value));
} else {
const valueObj = value || {};
const keys = properties || Object.keys(valueObj);
for (const k of keys) {
if (primitive || !valueObj.hasOwnProperty(k)) {
if (objectValues[k]) {
// fill with blanks for idx to avoid misplacing from later values
objectValues[k].push("");
}
} else {
if (objectValues[k]) {
objectValues[k].push(stringifyValue(valueObj[k]));
} else {
objectValues[k] = createColumn(valueObj[k], idx);
}
}
}
values.push("");
}
indexKeys.push(k);
});
const headerKeys = Object.keys(objectValues);
const bodyValues = Object.values(objectValues);
const header = [
indexKey,
...(properties ||
[...headerKeys, !isMap && hasPrimitives && valuesKey]),
].filter(Boolean);
const body = [indexKeys, ...bodyValues, values];
toTable(header, body);
};
time = (label = "default") => {
label = String(label);
if (timerMap.has(label)) {
this.warn(`Timer '${label}' already exists`);
return;
}
timerMap.set(label, Date.now());
};
timeLog = (label = "default", ...args) => {
label = String(label);
if (!timerMap.has(label)) {
this.warn(`Timer '${label}' does not exists`);
return;
}
const startTime = timerMap.get(label);
const duration = Date.now() - startTime;
this.info(`${label}: ${duration}ms`, ...args);
};
timeEnd = (label = "default") => {
label = String(label);
if (!timerMap.has(label)) {
this.warn(`Timer '${label}' does not exists`);
return;
}
const startTime = timerMap.get(label);
timerMap.delete(label);
const duration = Date.now() - startTime;
this.info(`${label}: ${duration}ms`);
};
group = (...label) => {
if (label.length > 0) {
this.log(...label);
}
this.indentLevel += 2;
};
groupCollapsed = this.group;
groupEnd = () => {
if (this.indentLevel > 0) {
this.indentLevel -= 2;
}
};
clear = () => {
this.indentLevel = 0;
this.#printFunc(CSI.kClear, false);
this.#printFunc(CSI.kClearScreenDown, false);
};
trace = (...args) => {
const message = inspectArgs(
args,
{ ...getConsoleInspectOptions(), indentLevel: 0 },
);
const err = {
name: "Trace",
message,
};
Error.captureStackTrace(err, this.trace);
this.error(err.stack);
};
static [Symbol.hasInstance](instance) {
return instance[isConsoleInstance];
}
}
const customInspect = Symbol("Deno.customInspect");
function inspect(
value,
inspectOptions = {},
) {
return inspectValue(value, new Set(), 0, {
...DEFAULT_INSPECT_OPTIONS,
...inspectOptions,
// TODO(nayeemrmn): Indent level is not supported.
indentLevel: 0,
});
}
// Expose these fields to internalObject for tests.
exposeForTest("Console", Console);
exposeForTest("cssToAnsi", cssToAnsi);
exposeForTest("inspectArgs", inspectArgs);
exposeForTest("parseCss", parseCss);
exposeForTest("parseCssColor", parseCssColor);
window.__bootstrap.console = {
CSI,
inspectArgs,
Console,
customInspect,
inspect,
};
})(this);