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svelte/test/sourcemaps/index.ts

116 lines
3.4 KiB

import * as fs from 'fs';
import * as path from 'path';
import * as assert from 'assert';
import { loadConfig, svelte } from '../helpers';
// keep source-map at version 0.7.x
// https://github.com/mozilla/source-map/issues/400
import { getLocator } from 'locate-character';
import { SourceMapConsumer } from 'source-map';
describe('sourcemaps', () => {
fs.readdirSync(`${__dirname}/samples`).forEach(dir => {
if (dir[0] === '.') return;
const config = loadConfig(`${__dirname}/samples/${dir}/_config.js`);
// add .solo to a sample directory name to only run that test
const solo = config.solo || /\.solo/.test(dir);
const skip = config.skip || /\.skip/.test(dir);
if (solo && process.env.CI) {
throw new Error('Forgot to remove `solo: true` from test');
}
(solo ? it.only : skip ? it.skip : it)(dir, async () => {
const { test } = require(`./samples/${dir}/test.js`);
const inputFile = path.resolve(`${__dirname}/samples/${dir}/input.svelte`);
const outputName = '_actual';
const outputBase = path.resolve(`${__dirname}/samples/${dir}/${outputName}`);
const inputCode = fs.readFileSync(inputFile, 'utf-8');
const input = {
code: inputCode,
locate: getLocator(inputCode)
};
const preprocessed = await svelte.preprocess(
input.code,
config.preprocess || {},
config.options || {
filename: 'input.svelte'
}
);
const { js, css } = svelte.compile(
preprocessed.code, {
filename: 'input.svelte',
// filenames for sourcemaps
sourcemap: preprocessed.map,
outputFilename: `${outputName}.js`,
cssOutputFilename: `${outputName}.css`,
...(config.compile_options || {})
});
js.code = js.code.replace(
/generated by Svelte v\d+\.\d+\.\d+/,
match => match.replace(/\d/g, 'x')
);
fs.writeFileSync(`${outputBase}.svelte`, preprocessed.code);
if (preprocessed.map) {
fs.writeFileSync(
`${outputBase}.svelte.map`,
// TODO encode mappings for output - svelte.preprocess returns decoded mappings
JSON.stringify(preprocessed.map, null, 2)
);
}
fs.writeFileSync(
`${outputBase}.js`,
`${js.code}\n//# sourceMappingURL=${outputName}.js.map`
);
fs.writeFileSync(
`${outputBase}.js.map`,
JSON.stringify(js.map, null, 2)
);
if (css.code) {
fs.writeFileSync(
`${outputBase}.css`,
`${css.code}\n/*# sourceMappingURL=${outputName}.css.map */`
);
fs.writeFileSync(
`${outputBase}.css.map`,
JSON.stringify(css.map, null, ' ')
);
}
assert.deepEqual(
js.map.sources.slice().sort(),
(config.js_map_sources || ['input.svelte']).sort()
);
if (css.map) {
assert.deepEqual(
css.map.sources.slice().sort(),
(config.css_map_sources || ['input.svelte']).sort()
);
}
// use locate_1 with mapConsumer:
// lines are one-based, columns are zero-based
preprocessed.mapConsumer = preprocessed.map && await new SourceMapConsumer(preprocessed.map);
preprocessed.locate = getLocator(preprocessed.code);
preprocessed.locate_1 = getLocator(preprocessed.code, { offsetLine: 1 });
js.mapConsumer = js.map && await new SourceMapConsumer(js.map);
js.locate = getLocator(js.code);
js.locate_1 = getLocator(js.code, { offsetLine: 1 });
css.mapConsumer = css.map && await new SourceMapConsumer(css.map);
css.locate = getLocator(css.code || '');
css.locate_1 = getLocator(css.code || '', { offsetLine: 1 });
await test({ assert, input, preprocessed, js, css });
});
});
});