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svelte/test/sourcemaps/index.js

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1.4 KiB

import * as fs from "fs";
import * as path from "path";
import assert from "assert";
import { svelte } from "../helpers.js";
import { SourceMapConsumer } from "source-map";
import { getLocator } from "locate-character";
describe("sourcemaps", () => {
fs.readdirSync("test/sourcemaps/samples").forEach(dir => {
if (dir[0] === ".") return;
// add .solo to a sample directory name to only run that test
const solo = /\.solo/.test(dir);
if (solo && process.env.CI) {
throw new Error("Forgot to remove `solo: true` from test");
}
(solo ? it.only : it)(dir, () => {
const filename = path.resolve(
`test/sourcemaps/samples/${dir}/input.html`
);
const outputFilename = path.resolve(
`test/sourcemaps/samples/${dir}/output.js`
);
const input = fs.readFileSync(filename, "utf-8").replace(/\s+$/, "");
const { code, map } = svelte.compile(input, {
filename,
outputFilename
});
fs.writeFileSync(
outputFilename,
`${code}\n//# sourceMappingURL=output.js.map`
);
fs.writeFileSync(
`${outputFilename}.map`,
JSON.stringify(map, null, " ")
);
assert.deepEqual(map.sources, ["input.html"]);
const { test } = require(`./samples/${dir}/test.js`);
const smc = new SourceMapConsumer(map);
const locateInSource = getLocator(input);
const locateInGenerated = getLocator(code);
test({ assert, code, map, smc, locateInSource, locateInGenerated });
});
});
});