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fix: make postinstall patcher idempotent

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This commit is contained in:
Peter Steinberger
2026-01-13 23:12:27 +00:00
parent 45c314fbe6
commit 4c932edabc
3 changed files with 71 additions and 0 deletions
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46
src/postinstall-patcher.test.ts
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@@ -74,6 +74,52 @@ index 0000000..1111111 100644
fs.rmSync(dir, { recursive: true, force: true });
});
it("treats already-applied hunks as no-ops", () => {
const dir = makeTempDir();
const target = path.join(dir, "lib");
fs.mkdirSync(target);
const filePath = path.join(target, "main.js");
const original = `${[
"var QRCode = require('./../vendor/QRCode'),",
" QRErrorCorrectLevel = require('./../vendor/QRCode/QRErrorCorrectLevel'),",
' black = "\\033[40m \\033[0m",',
' white = "\\033[47m \\033[0m",',
" toCell = function (isBlack) {",
].join("\n")}\n`;
fs.writeFileSync(filePath, original, "utf-8");
const patchText = `diff --git a/lib/main.js b/lib/main.js
index 0000000..1111111 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -1,5 +1,5 @@
-var QRCode = require('./../vendor/QRCode'),
- QRErrorCorrectLevel = require('./../vendor/QRCode/QRErrorCorrectLevel'),
+var QRCode = require('./../vendor/QRCode/index.js'),
+ QRErrorCorrectLevel = require('./../vendor/QRCode/QRErrorCorrectLevel.js'),
black = "\\033[40m \\033[0m",
white = "\\033[47m \\033[0m",
toCell = function (isBlack) {
`;
applyPatchSet({ patchText, targetDir: dir });
applyPatchSet({ patchText, targetDir: dir });
const updated = fs.readFileSync(filePath, "utf-8");
expect(updated).toBe(
`${[
"var QRCode = require('./../vendor/QRCode/index.js'),",
" QRErrorCorrectLevel = require('./../vendor/QRCode/QRErrorCorrectLevel.js'),",
' black = "\\033[40m \\033[0m",',
' white = "\\033[47m \\033[0m",',
" toCell = function (isBlack) {",
].join("\n")}\n`,
);
fs.rmSync(dir, { recursive: true, force: true });
});
it("handles multiple hunks with offsets", () => {
const dir = makeTempDir();
const filePath = path.join(dir, "file.txt");