index.js
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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
Object.defineProperty(exports, 'DIFF_DELETE', {
enumerable: true,
get: function () {
return _cleanupSemantic.DIFF_DELETE;
}
});
Object.defineProperty(exports, 'DIFF_EQUAL', {
enumerable: true,
get: function () {
return _cleanupSemantic.DIFF_EQUAL;
}
});
Object.defineProperty(exports, 'DIFF_INSERT', {
enumerable: true,
get: function () {
return _cleanupSemantic.DIFF_INSERT;
}
});
Object.defineProperty(exports, 'Diff', {
enumerable: true,
get: function () {
return _cleanupSemantic.Diff;
}
});
Object.defineProperty(exports, 'diffLinesRaw', {
enumerable: true,
get: function () {
return _diffLines.diffLinesRaw;
}
});
Object.defineProperty(exports, 'diffLinesUnified', {
enumerable: true,
get: function () {
return _diffLines.diffLinesUnified;
}
});
Object.defineProperty(exports, 'diffLinesUnified2', {
enumerable: true,
get: function () {
return _diffLines.diffLinesUnified2;
}
});
Object.defineProperty(exports, 'diffStringsRaw', {
enumerable: true,
get: function () {
return _printDiffs.diffStringsRaw;
}
});
Object.defineProperty(exports, 'diffStringsUnified', {
enumerable: true,
get: function () {
return _printDiffs.diffStringsUnified;
}
});
exports.default = void 0;
var _chalk = _interopRequireDefault(require('chalk'));
var _jestGetType = _interopRequireDefault(require('jest-get-type'));
var _prettyFormat = _interopRequireDefault(require('pretty-format'));
var _cleanupSemantic = require('./cleanupSemantic');
var _constants = require('./constants');
var _diffLines = require('./diffLines');
var _normalizeDiffOptions = require('./normalizeDiffOptions');
var _printDiffs = require('./printDiffs');
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {default: obj};
}
var Symbol = global['jest-symbol-do-not-touch'] || global.Symbol;
const getCommonMessage = (message, options) => {
const {commonColor} = (0, _normalizeDiffOptions.normalizeDiffOptions)(
options
);
return commonColor(message);
};
const {
AsymmetricMatcher,
DOMCollection,
DOMElement,
Immutable,
ReactElement,
ReactTestComponent
} = _prettyFormat.default.plugins;
const PLUGINS = [
ReactTestComponent,
ReactElement,
DOMElement,
DOMCollection,
Immutable,
AsymmetricMatcher
];
const FORMAT_OPTIONS = {
plugins: PLUGINS
};
const FORMAT_OPTIONS_0 = {...FORMAT_OPTIONS, indent: 0};
const FALLBACK_FORMAT_OPTIONS = {
callToJSON: false,
maxDepth: 10,
plugins: PLUGINS
};
const FALLBACK_FORMAT_OPTIONS_0 = {...FALLBACK_FORMAT_OPTIONS, indent: 0}; // Generate a string that will highlight the difference between two values
// with green and red. (similar to how github does code diffing)
// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
function diff(a, b, options) {
if (Object.is(a, b)) {
return getCommonMessage(_constants.NO_DIFF_MESSAGE, options);
}
const aType = (0, _jestGetType.default)(a);
let expectedType = aType;
let omitDifference = false;
if (aType === 'object' && typeof a.asymmetricMatch === 'function') {
if (a.$$typeof !== Symbol.for('jest.asymmetricMatcher')) {
// Do not know expected type of user-defined asymmetric matcher.
return null;
}
if (typeof a.getExpectedType !== 'function') {
// For example, expect.anything() matches either null or undefined
return null;
}
expectedType = a.getExpectedType(); // Primitive types boolean and number omit difference below.
// For example, omit difference for expect.stringMatching(regexp)
omitDifference = expectedType === 'string';
}
if (expectedType !== (0, _jestGetType.default)(b)) {
return (
' Comparing two different types of values.' +
` Expected ${_chalk.default.green(expectedType)} but ` +
`received ${_chalk.default.red((0, _jestGetType.default)(b))}.`
);
}
if (omitDifference) {
return null;
}
switch (aType) {
case 'string':
return (0, _diffLines.diffLinesUnified)(
a.split('\n'),
b.split('\n'),
options
);
case 'boolean':
case 'number':
return comparePrimitive(a, b, options);
case 'map':
return compareObjects(sortMap(a), sortMap(b), options);
case 'set':
return compareObjects(sortSet(a), sortSet(b), options);
default:
return compareObjects(a, b, options);
}
}
function comparePrimitive(a, b, options) {
const aFormat = (0, _prettyFormat.default)(a, FORMAT_OPTIONS);
const bFormat = (0, _prettyFormat.default)(b, FORMAT_OPTIONS);
return aFormat === bFormat
? getCommonMessage(_constants.NO_DIFF_MESSAGE, options)
: (0, _diffLines.diffLinesUnified)(
aFormat.split('\n'),
bFormat.split('\n'),
options
);
}
function sortMap(map) {
return new Map(Array.from(map.entries()).sort());
}
function sortSet(set) {
return new Set(Array.from(set.values()).sort());
}
function compareObjects(a, b, options) {
let difference;
let hasThrown = false;
const noDiffMessage = getCommonMessage(_constants.NO_DIFF_MESSAGE, options);
try {
const aCompare = (0, _prettyFormat.default)(a, FORMAT_OPTIONS_0);
const bCompare = (0, _prettyFormat.default)(b, FORMAT_OPTIONS_0);
if (aCompare === bCompare) {
difference = noDiffMessage;
} else {
const aDisplay = (0, _prettyFormat.default)(a, FORMAT_OPTIONS);
const bDisplay = (0, _prettyFormat.default)(b, FORMAT_OPTIONS);
difference = (0, _diffLines.diffLinesUnified2)(
aDisplay.split('\n'),
bDisplay.split('\n'),
aCompare.split('\n'),
bCompare.split('\n'),
options
);
}
} catch {
hasThrown = true;
} // If the comparison yields no results, compare again but this time
// without calling `toJSON`. It's also possible that toJSON might throw.
if (difference === undefined || difference === noDiffMessage) {
const aCompare = (0, _prettyFormat.default)(a, FALLBACK_FORMAT_OPTIONS_0);
const bCompare = (0, _prettyFormat.default)(b, FALLBACK_FORMAT_OPTIONS_0);
if (aCompare === bCompare) {
difference = noDiffMessage;
} else {
const aDisplay = (0, _prettyFormat.default)(a, FALLBACK_FORMAT_OPTIONS);
const bDisplay = (0, _prettyFormat.default)(b, FALLBACK_FORMAT_OPTIONS);
difference = (0, _diffLines.diffLinesUnified2)(
aDisplay.split('\n'),
bDisplay.split('\n'),
aCompare.split('\n'),
bCompare.split('\n'),
options
);
}
if (difference !== noDiffMessage && !hasThrown) {
difference =
getCommonMessage(_constants.SIMILAR_MESSAGE, options) +
'\n\n' +
difference;
}
}
return difference;
}
var _default = diff;
exports.default = _default;