@nrwl/jest
Version:
128 lines • 5.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.jestConfigObject = exports.jestConfigObjectAst = exports.removeProperty = exports.addOrUpdateProperty = exports.getJsonObject = void 0;
const ts = require("typescript");
const workspace_1 = require("@nrwl/workspace");
const typescript_1 = require("nx/src/utils/typescript");
const devkit_1 = require("@nrwl/devkit");
function createInsertChange(path, value, position, precedingCommaNeeded) {
return new workspace_1.InsertChange(path, position, `${precedingCommaNeeded ? ',' : ''}${value}`);
}
function findPropertyAssignment(object, propertyName) {
return object.properties.find((prop) => {
const propNameText = prop.name.getText();
if (propNameText.match(/^["'].+["']$/g)) {
return JSON.parse(propNameText.replace(/'/g, '"')) === propertyName;
}
return propNameText === propertyName;
});
}
function getJsonObject(object) {
const value = (0, devkit_1.stripJsonComments)(object);
// react babel-jest has __dirname in the config.
// Put a temp variable in the anon function so that it doesnt fail.
// Migration script has a catch handler to give instructions on how to update the jest config if this fails.
return Function(`
"use strict";
let __dirname = '';
return (${value});
`)();
}
exports.getJsonObject = getJsonObject;
function addOrUpdateProperty(object, properties, value, path) {
const propertyName = properties.shift();
const propertyAssignment = findPropertyAssignment(object, propertyName);
if (propertyAssignment) {
if (propertyAssignment.initializer.kind === ts.SyntaxKind.StringLiteral ||
propertyAssignment.initializer.kind === ts.SyntaxKind.NumericLiteral ||
propertyAssignment.initializer.kind === ts.SyntaxKind.FalseKeyword ||
propertyAssignment.initializer.kind === ts.SyntaxKind.TrueKeyword) {
return [
new workspace_1.ReplaceChange(path, propertyAssignment.initializer.pos, propertyAssignment.initializer.getFullText(), value),
];
}
if (propertyAssignment.initializer.kind ===
ts.SyntaxKind.ArrayLiteralExpression) {
const arrayLiteral = propertyAssignment.initializer;
if (arrayLiteral.elements.some((element) => {
return element.getText().replace(/'/g, '"') === value;
})) {
return [];
}
if (arrayLiteral.elements.length === 0) {
return [
new workspace_1.InsertChange(path, arrayLiteral.elements.end, value),
];
}
else {
return [
createInsertChange(path, value, arrayLiteral.elements.end, arrayLiteral.elements.length !== 0 &&
!arrayLiteral.elements.hasTrailingComma),
];
}
}
else if (propertyAssignment.initializer.kind ===
ts.SyntaxKind.ObjectLiteralExpression) {
return addOrUpdateProperty(propertyAssignment.initializer, properties, value, path);
}
}
else {
if (propertyName === undefined) {
throw new Error(`Please use dot delimited paths to update an existing object. Eg. object.property `);
}
return [
createInsertChange(path, `${JSON.stringify(propertyName)}: ${value}`, object.properties.end, object.properties.length !== 0 && !object.properties.hasTrailingComma),
];
}
}
exports.addOrUpdateProperty = addOrUpdateProperty;
function removeProperty(object, properties) {
const propertyName = properties.shift();
const propertyAssignment = findPropertyAssignment(object, propertyName);
if (propertyAssignment) {
if (properties.length > 0 &&
propertyAssignment.initializer.kind ===
ts.SyntaxKind.ObjectLiteralExpression) {
return removeProperty(propertyAssignment.initializer, properties);
}
return propertyAssignment;
}
else {
return null;
}
}
exports.removeProperty = removeProperty;
/**
* Should be used to get the jest config object.
*
* @param host
* @param path
*/
function jestConfigObjectAst(host, path) {
const fileContent = host.read(path).toString('utf-8');
const sourceFile = ts.createSourceFile('jest.config.js', fileContent, ts.ScriptTarget.Latest, true);
const expressions = (0, typescript_1.findNodes)(sourceFile, ts.SyntaxKind.BinaryExpression);
const moduleExports = expressions.find((node) => node.left.getText() === 'module.exports' &&
node.operatorToken.kind === ts.SyntaxKind.EqualsToken);
if (!moduleExports) {
throw new Error(`
The provided jest config file does not have the expected 'module.exports' expression.
See https://jestjs.io/docs/en/configuration for more details.`);
}
if (!ts.isObjectLiteralExpression(moduleExports.right)) {
throw new Error(`The 'module.exports' expression is not an object literal.`);
}
return moduleExports.right;
}
exports.jestConfigObjectAst = jestConfigObjectAst;
/**
* Returns the jest config object
* @param host
* @param path
*/
function jestConfigObject(host, path) {
const jestConfigAst = jestConfigObjectAst(host, path);
return getJsonObject(jestConfigAst.getText());
}
exports.jestConfigObject = jestConfigObject;
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