node/test/parallel/test-module-strip-types.js

106 lines
3.7 KiB
JavaScript

'use strict';
const common = require('../common');
if (!process.config.variables.node_use_amaro) common.skip('Requires Amaro');
const assert = require('assert');
const vm = require('node:vm');
const { stripTypeScriptTypes } = require('node:module');
const { test } = require('node:test');
common.expectWarning(
'ExperimentalWarning',
'stripTypeScriptTypes is an experimental feature and might change at any time',
);
const sourceToBeTransformed = `
namespace MathUtil {
export const add = (a: number, b: number) => a + b;
}`;
const sourceToBeTransformedMapping = 'UACY;aACK,MAAM,CAAC,GAAW,IAAc,IAAI;AACnD,GAFU,aAAA';
test('stripTypeScriptTypes', () => {
const source = 'const x: number = 1;';
const result = stripTypeScriptTypes(source);
assert.strictEqual(result, 'const x = 1;');
});
test('stripTypeScriptTypes explicit', () => {
const source = 'const x: number = 1;';
const result = stripTypeScriptTypes(source, { mode: 'strip' });
assert.strictEqual(result, 'const x = 1;');
});
test('stripTypeScriptTypes code is not a string', () => {
assert.throws(() => stripTypeScriptTypes({}),
{ code: 'ERR_INVALID_ARG_TYPE' });
});
test('stripTypeScriptTypes invalid mode', () => {
const source = 'const x: number = 1;';
assert.throws(() => stripTypeScriptTypes(source, { mode: 'invalid' }), { code: 'ERR_INVALID_ARG_VALUE' });
});
test('stripTypeScriptTypes sourceMap throws when mode is strip', () => {
const source = 'const x: number = 1;';
assert.throws(() => stripTypeScriptTypes(source,
{ mode: 'strip', sourceMap: true }),
{ code: 'ERR_INVALID_ARG_VALUE' });
});
test('stripTypeScriptTypes sourceUrl throws when mode is strip', () => {
const source = 'const x: number = 1;';
const result = stripTypeScriptTypes(source, { mode: 'strip', sourceUrl: 'foo.ts' });
assert.strictEqual(result, 'const x = 1;\n\n//# sourceURL=foo.ts');
});
test('stripTypeScriptTypes source map when mode is transform', () => {
const result = stripTypeScriptTypes(sourceToBeTransformed, { mode: 'transform', sourceMap: true });
const script = new vm.Script(result);
const sourceMap =
{
version: 3,
sources: [''],
names: [],
mappings: sourceToBeTransformedMapping,
};
const inlinedSourceMap = Buffer.from(JSON.stringify(sourceMap)).toString('base64');
assert.strictEqual(script.sourceMapURL, `data:application/json;base64,${inlinedSourceMap}`);
});
test('stripTypeScriptTypes source map when mode is transform and sourceUrl', () => {
const result = stripTypeScriptTypes(sourceToBeTransformed, {
mode: 'transform',
sourceMap: true,
sourceUrl: 'test.ts'
});
const script = new vm.Script(result);
const sourceMap =
{
version: 3,
sources: ['test.ts'],
names: [],
mappings: sourceToBeTransformedMapping,
};
const inlinedSourceMap = Buffer.from(JSON.stringify(sourceMap)).toString('base64');
assert.strictEqual(script.sourceMapURL, `data:application/json;base64,${inlinedSourceMap}`);
});
test('stripTypeScriptTypes source map when mode is transform and sourceUrl with non-latin-1 chars', () => {
const sourceUrl = 'dir%20with $unusual"chars?\'åß∂ƒ©∆¬…`.cts';
const result = stripTypeScriptTypes(sourceToBeTransformed, {
mode: 'transform',
sourceMap: true,
sourceUrl,
});
const script = new vm.Script(result);
const sourceMap =
{
version: 3,
sources: [sourceUrl],
names: [],
mappings: sourceToBeTransformedMapping,
};
const inlinedSourceMap = Buffer.from(JSON.stringify(sourceMap)).toString('base64');
assert.strictEqual(script.sourceMapURL, `data:application/json;base64,${inlinedSourceMap}`);
});