1 | const babel = require('@babel/core');
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2 | const { wrap } = require('jest-snapshot-serializer-raw');
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3 | const preset = require('..');
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4 |
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5 | function transform(input, options = {}) {
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6 | return wrap(
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7 | babel.transform(input, {
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8 | filename: 'file.ts',
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9 | babelrc: false,
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10 | presets: [preset],
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11 | sourceMaps: true,
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12 | }).code
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13 | );
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14 | }
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15 |
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16 | it('optional-chaining', () => {
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17 | expect(
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18 | transform(`
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19 | foo?.bar;
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20 | `)
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21 | ).toMatchSnapshot();
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22 | });
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23 | it('nullish-coalescing', () => {
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24 | expect(
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25 | transform(`
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26 | var foo = object.foo ?? "default";
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27 | `)
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28 | ).toMatchSnapshot();
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29 | });
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30 | it('class-properties', () => {
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31 | expect(
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32 | transform(`
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33 | class Bork {
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34 | //Property initializer syntax
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35 | instanceProperty = "bork";
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36 | boundFunction = () => {
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37 | return this.instanceProperty;
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38 | };
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39 |
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40 | //Static class properties
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41 | static staticProperty = "babelIsCool";
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42 | static staticFunction = function() {
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43 | return Bork.staticProperty;
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44 | };
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45 | }
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46 | `)
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47 | ).toMatchSnapshot();
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48 | });
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49 | it('preset-typescript', () => {
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50 | expect(
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51 | transform(`
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52 | const x: number = 0;
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53 | `)
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54 | ).toMatchSnapshot();
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55 | });
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56 | it('plugin-transform-modules-commonjs', () => {
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57 | expect(
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58 | transform(`
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59 | export default 42;
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60 | `)
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61 | ).toMatchSnapshot();
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62 | });
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