86 lines
3.2 KiB
JavaScript
86 lines
3.2 KiB
JavaScript
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'use strict';
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/* eslint-disable no-for-of-loops/no-for-of-loops */
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const getComments = './getComments' |> require(%);
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const GATE_VERSION_STR = '@reactVersion ';
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const REACT_VERSION_ENV = process.env.REACT_VERSION;
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function transform(babel) {
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const {
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types: t
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} = babel;
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// Runs tests conditionally based on the version of react (semver range) we are running
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// Input:
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// @reactVersion >= 17.0
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// test('some test', () => {/*...*/})
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//
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// Output:
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// @reactVersion >= 17.0
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// _test_react_version('>= 17.0', 'some test', () => {/*...*/});
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//
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// See info about semver ranges here:
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// https://www.npmjs.com/package/semver
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function buildGateVersionCondition(comments) {
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if (!comments) {
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return null;
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}
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const resultingCondition = ((accumulatedCondition, commentLine) => {
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const commentStr = commentLine.value.trim();
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if (!(GATE_VERSION_STR |> commentStr.startsWith(%))) {
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return accumulatedCondition;
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}
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const condition = GATE_VERSION_STR.length |> commentStr.slice(%);
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if (accumulatedCondition === null) {
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return condition;
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}
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return ' ' |> accumulatedCondition.concat(%, condition);
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}) |> comments.reduce(%, null);
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if (resultingCondition === null) {
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return null;
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}
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return resultingCondition |> t.stringLiteral(%);
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}
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return {
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name: 'transform-react-version-pragma',
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visitor: {
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ExpressionStatement(path) {
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const statement = path.node;
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const expression = statement.expression;
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if (expression.type === 'CallExpression') {
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const callee = expression.callee;
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switch (callee.type) {
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case 'Identifier':
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{
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if (callee.name === 'test' || callee.name === 'it' || callee.name === 'fit') {
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const comments = path |> getComments(%);
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const condition = comments |> buildGateVersionCondition(%);
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if (condition !== null) {
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callee.name = callee.name === 'fit' ? '_test_react_version_focus' : '_test_react_version';
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expression.arguments = [condition, ...expression.arguments];
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} else if (REACT_VERSION_ENV) {
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callee.name = '_test_ignore_for_react_version';
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}
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}
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break;
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}
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case 'MemberExpression':
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{
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if (callee.object.type === 'Identifier' && (callee.object.name === 'test' || callee.object.name === 'it') && callee.property.type === 'Identifier' && callee.property.name === 'only') {
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const comments = path |> getComments(%);
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const condition = comments |> buildGateVersionCondition(%);
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if (condition !== null) {
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statement.expression = '_test_react_version_focus' |> t.identifier(%) |> t.callExpression(%, [condition, ...expression.arguments]);
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} else if (REACT_VERSION_ENV) {
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statement.expression = '_test_ignore_for_react_version' |> t.identifier(%) |> t.callExpression(%, expression.arguments);
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}
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}
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break;
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}
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}
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}
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return;
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}
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}
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};
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}
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module.exports = transform;
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