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feat(lint): Add lint for usage of node globals (with autofix) (#25048)
From upgrading `deno_lint`. Previously if you had a node project that used a bunch of node globals (`process.env`, etc), you would have to fix the errors by hand. This PR includes a new lint that detects usages of node globals (`process`, `setImmediate`, `Buffer`, etc.) and provides an autofix to import the correct value. For instance: ```ts // main.ts const _foo = process.env.FOO; ``` `deno lint` gives you ```ts error[no-node-globals]: NodeJS globals are not available in Deno --> /home/foo.ts:1:14 | 1 | const _foo = process.env.FOO; | ^^^^^^^ = hint: Add `import process from "node:process";` docs: https://lint.deno.land/rules/no-node-globals Found 1 problem (1 fixable via --fix) Checked 1 file ``` And `deno lint --fix` adds the import for you: ```ts // main.ts import process from "node:process"; const _foo = process.env.FOO; ```
This commit is contained in:
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7 changed files with 72 additions and 5 deletions
5
Cargo.lock
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Cargo.lock
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@ -1703,9 +1703,9 @@ dependencies = [
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[[package]]
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name = "deno_lint"
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version = "0.62.0"
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version = "0.63.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "69bb0887acec1830cac1a325ebe5cec96fdc41f61ee50e7b25447741007757b6"
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checksum = "e0e6cc8fcb4819dd5e12d640d6fc455217c66bda00e30fd6d46d2844e3e1bdcf"
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dependencies = [
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"anyhow",
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"deno_ast",
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@ -1713,6 +1713,7 @@ dependencies = [
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"if_chain",
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"log",
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"once_cell",
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"phf 0.11.2",
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"regex",
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"serde",
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"serde_json",
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@ -70,7 +70,7 @@ deno_core = { workspace = true, features = ["include_js_files_for_snapshotting"]
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deno_doc = { version = "0.146.0", features = ["html", "syntect"] }
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deno_emit = "=0.44.0"
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deno_graph = { version = "=0.81.2" }
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deno_lint = { version = "=0.62.0", features = ["docs"] }
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deno_lint = { version = "=0.63.1", features = ["docs"] }
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deno_lockfile.workspace = true
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deno_npm = "=0.21.4"
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deno_package_json.workspace = true
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@ -1,5 +1,6 @@
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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use std::collections::HashSet;
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use std::path::Path;
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use deno_ast::MediaType;
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@ -225,14 +226,23 @@ fn apply_lint_fixes(
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if quick_fixes.is_empty() {
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return None;
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}
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let mut import_fixes = HashSet::new();
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// remove any overlapping text changes, we'll circle
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// back for another pass to fix the remaining
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quick_fixes.sort_by_key(|change| change.range.start);
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for i in (1..quick_fixes.len()).rev() {
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let cur = &quick_fixes[i];
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let previous = &quick_fixes[i - 1];
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let is_overlapping = cur.range.start < previous.range.end;
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if is_overlapping {
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// hack: deduplicate import fixes to avoid creating errors
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if previous.new_text.trim_start().starts_with("import ") {
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import_fixes.insert(previous.new_text.trim().to_string());
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}
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let is_overlapping = cur.range.start <= previous.range.end;
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if is_overlapping
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|| (cur.new_text.trim_start().starts_with("import ")
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&& import_fixes.contains(cur.new_text.trim()))
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{
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quick_fixes.remove(i);
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}
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}
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@ -0,0 +1,23 @@
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{
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"tempDir": true,
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"steps": [
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{
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"args": "run main.ts",
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"output": "error.out",
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"exitCode": 1
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},
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{
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"args": "lint main.ts",
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"output": "lint.out",
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"exitCode": 1
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},
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{
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"args": "lint --fix main.ts",
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"output": "Checked 1 file\n"
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},
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{
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"args": "run --allow-env main.ts",
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"output": ""
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}
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]
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}
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@ -0,0 +1,4 @@
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error: Uncaught (in promise) ReferenceError: process is not defined
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const _foo = process.env.FOO;
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^
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at [WILDCARD]main.ts:3:14
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tests/specs/lint/node_globals_no_duplicate_imports/lint.out
Normal file
22
tests/specs/lint/node_globals_no_duplicate_imports/lint.out
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@ -0,0 +1,22 @@
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error[no-node-globals]: NodeJS globals are not available in Deno
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--> [WILDCARD]main.ts:3:14
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3 | const _foo = process.env.FOO;
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| ^^^^^^^
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= hint: Add `import process from "node:process";`
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docs: https://lint.deno.land/rules/no-node-globals
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error[no-node-globals]: NodeJS globals are not available in Deno
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--> [WILDCARD]main.ts:7:14
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7 | const _bar = process.env.BAR;
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| ^^^^^^^
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= hint: Add `import process from "node:process";`
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docs: https://lint.deno.land/rules/no-node-globals
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Found 2 problems (2 fixable via --fix)
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Checked 1 file
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@ -0,0 +1,7 @@
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import {} from "node:console";
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const _foo = process.env.FOO;
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import {} from "node:assert";
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const _bar = process.env.BAR;
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