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feat(import-target): Add resolution error reason #231

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feat(import-target): Add resolution error reason #231

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a256b25
feat(import-target): Pass raw "enhanced-resolve" error as message
scagood Apr 8, 2024
f9e454d
chore: Demo with only enhanced-resolve
scagood Apr 17, 2024
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7 changes: 5 additions & 2 deletions lib/util/check-existence.js
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Original file line number Diff line number Diff line change
Expand Up @@ -17,13 +17,16 @@ const { convertJsExtensionToTs } = require("../util/map-typescript-extension")
* @returns {void}
*/
function markMissing(context, target) {
// This should never happen... this is just a fallback for typescript
target.resolveError ??= `"${target.name}" is not found`

context.report({
node: target.node,
loc: /** @type {import('eslint').AST.SourceLocation} */ (
target.node.loc
),
messageId: "notFound",
data: /** @type {Record<string, *>} */ (target),
data: { resolveError: target.resolveError },
})
}

Expand Down Expand Up @@ -85,5 +88,5 @@ exports.checkExistence = function checkExistence(context, targets) {
}

exports.messages = {
notFound: '"{{name}}" is not found.',
notFound: "{{resolveError}}",
}
26 changes: 23 additions & 3 deletions lib/util/import-target.js
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Original file line number Diff line number Diff line change
Expand Up @@ -131,6 +131,12 @@ module.exports = class ImportTarget {
*/
this.moduleName = this.getModuleName()

/**
* This is the full resolution failure reasons
* @type {string | null}
*/
this.resolveError = null

/**
* The full path of this import target.
* If the target is a module and it does not exist then this is `null`.
Expand Down Expand Up @@ -239,6 +245,19 @@ module.exports = class ImportTarget {
return [this.options.basedir]
}

/**
* @param {string} baseDir
* @param {unknown} error
* @returns {void}
*/
handleResolutionError(baseDir, error) {
if (error instanceof Error === false) {
throw error
}

this.resolveError = error.message
}

/**
* Resolve the given id to file paths.
* @returns {string | null} The resolved path.
Expand Down Expand Up @@ -286,12 +305,13 @@ module.exports = class ImportTarget {

const cwd = this.context.settings?.cwd ?? process.cwd()
for (const directory of this.getPaths()) {
const baseDir = resolve(cwd, directory)

try {
const baseDir = resolve(cwd, directory)
const resolved = requireResolve(baseDir, this.name)
if (typeof resolved === "string") return resolved
} catch {
continue
} catch (error) {
this.handleResolutionError(baseDir, error)
}
}

Expand Down
1 change: 1 addition & 0 deletions tests/fixtures/no-missing/node_modules/misconfigured-default/build/index.js
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9 changes: 9 additions & 0 deletions tests/fixtures/no-missing/node_modules/misconfigured-default/package.json
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1 change: 1 addition & 0 deletions tests/fixtures/no-missing/node_modules/misconfigured-default/src/index.ts
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6 changes: 3 additions & 3 deletions tests/lib/configs/eslintrc.js
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Expand Up @@ -84,7 +84,7 @@ describe("node/recommended config", () => {
endLine: 1,
line: 1,
messageId: "notFound",
message: '"foo" is not found.',
message: `Can't resolve 'foo' in '${root}'`,
nodeType: "Literal",
ruleId: "n/no-missing-import",
severity: 2,
Expand Down Expand Up @@ -124,7 +124,7 @@ describe("node/recommended config", () => {
endLine: 1,
line: 1,
messageId: "notFound",
message: '"foo" is not found.',
message: `Can't resolve 'foo' in '${root}'`,
nodeType: "Literal",
ruleId: "n/no-missing-import",
severity: 2,
Expand Down Expand Up @@ -165,7 +165,7 @@ describe("node/recommended config", () => {
endLine: 1,
line: 1,
messageId: "notFound",
message: '"foo" is not found.',
message: `Can't resolve 'foo' in '${root}'`,
nodeType: "Literal",
ruleId: "n/no-missing-import",
severity: 2,
Expand Down
73 changes: 55 additions & 18 deletions tests/lib/rules/no-missing-import.js
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Expand Up @@ -39,6 +39,18 @@ function fixture(name) {
return path.resolve(__dirname, "../../fixtures/no-missing", name)
}

function cantResolve(name, dir = "") {
return [
{
messageId: "notFound",
data: {
resolveError: `Can't resolve '${name}' in '${fixture(dir)}'`,
},
Comment on lines +46 to +48
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Suggested change
data: {
resolveError: `Can't resolve '${name}' in '${fixture(dir)}'`,
},

},
]
}

/** @type {import('eslint').RuleTester} */
const ruleTester = new RuleTester({
languageOptions: {
sourceType: "module",
Expand Down Expand Up @@ -320,89 +332,114 @@ ruleTester.run("no-missing-import", rule, {
{
filename: fixture("test.js"),
code: "import abc from 'no-exist-package-0';",
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
{
filename: fixture("test.js"),
code: "import abcdef from 'esm-module/sub.mjs';",
errors: ['"esm-module/sub.mjs" is not found.'],
errors: [
{
messageId: "notFound",
data: {
resolveError: [
"Package path ./sub.mjs is not exported from package",
fixture("node_modules/esm-module"),
`(see exports field in ${fixture("node_modules/esm-module/package.json")})`,
].join(" "),
},
},
],
},
{
filename: fixture("test.js"),
code: "import test from '@mysticatea/test';",
errors: ['"@mysticatea/test" is not found.'],
errors: cantResolve("@mysticatea/test"),
},
{
filename: fixture("test.js"),
code: "import c from './c';",
errors: ['"./c" is not found.'],
errors: cantResolve("./c"),
},
{
filename: fixture("test.ts"),
code: "import d from './d';",
errors: ['"./d" is not found.'],
errors: cantResolve("./d"),
},
{
filename: fixture("test.js"),
code: "import d from './d';",
errors: ['"./d" is not found.'],
errors: cantResolve("./d"),
},
{
filename: fixture("test.js"),
code: "import a from './a.json';",
errors: ['"./a.json" is not found.'],
errors: cantResolve("./a.json"),
},

// Should work fine if the filename is relative.
{
filename: "tests/fixtures/no-missing/test.js",
filename: fixture("test.js"),
code: "import eslint from 'no-exist-package-0';",
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
{
filename: "tests/fixtures/no-missing/test.js",
code: "import c from './c';",
errors: ['"./c" is not found.'],
errors: cantResolve("./c"),
},

// Relative paths to a directory should work.
{
filename: fixture("test.js"),
code: "import a from './bar';",
errors: ['"./bar" is not found.'],
errors: cantResolve("./bar"),
},
{
filename: fixture("test.js"),
code: "import a from './bar/';",
errors: ['"./bar/" is not found.'],
errors: cantResolve("./bar/"),
},
// Relative paths to an existing directory should not work.
{
filename: fixture("test.js"),
code: "import a from '.';",
errors: ['"." is not found.'],
errors: cantResolve("."),
},
{
filename: fixture("test.js"),
code: "import a from './';",
errors: ['"./" is not found.'],
errors: cantResolve("./"),
},
{
filename: fixture("test.js"),
code: "import a from './foo';",
errors: ['"./foo" is not found.'],
errors: cantResolve("./foo"),
},
{
filename: fixture("test.js"),
code: "import a from './foo/';",
errors: ['"./foo/" is not found.'],
errors: cantResolve("./foo/"),
},

// Case sensitive
{
filename: fixture("test.js"),
code: "import a from './A.js';",
errors: ['"./A.js" is not found.'],
errors: cantResolve("./A.js"),
},

{
filename: fixture("test.js"),
code: "import 'misconfigured-default';",
errors: [
{
messageId: "notFound",
data: {
name: "misconfigured-default",
resolveError: "Default condition should be last one",
},
},
],
},

// import()
Expand All @@ -412,7 +449,7 @@ ruleTester.run("no-missing-import", rule, {
filename: fixture("test.js"),
code: "function f() { import('no-exist-package-0') }",
languageOptions: { ecmaVersion: 2020 },
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
]
: []),
Expand Down
33 changes: 22 additions & 11 deletions tests/lib/rules/no-missing-require.js
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Original file line number Diff line number Diff line change
Expand Up @@ -25,6 +25,17 @@ function fixture(name) {
return path.resolve(__dirname, "../../fixtures/no-missing", name)
}

function cantResolve(name, dir = "") {
return [
{
messageId: "notFound",
data: {
resolveError: `Can't resolve '${name}' in '${fixture(dir)}'`,
},
},
]
}

const ruleTester = new RuleTester()
ruleTester.run("no-missing-require", rule, {
valid: [
Expand Down Expand Up @@ -333,65 +344,65 @@ ruleTester.run("no-missing-require", rule, {
{
filename: fixture("test.js"),
code: "require('no-exist-package-0');",
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
{
filename: fixture("test.js"),
code: "require('@mysticatea/test');",
errors: ['"@mysticatea/test" is not found.'],
errors: cantResolve("@mysticatea/test"),
},
{
filename: fixture("test.js"),
code: "require('./c');",
errors: ['"./c" is not found.'],
errors: cantResolve("./c"),
},
{
filename: fixture("test.js"),
code: "require('./d');",
errors: ['"./d" is not found.'],
errors: cantResolve("./d"),
},
{
filename: fixture("test.js"),
code: "require('./a.json');",
errors: ['"./a.json" is not found.'],
errors: cantResolve("./a.json"),
},

// Should work fine if the filename is relative.
{
filename: "tests/fixtures/no-missing/test.js",
code: "require('no-exist-package-0');",
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
{
filename: "tests/fixtures/no-missing/test.js",
code: "require('./c');",
errors: ['"./c" is not found.'],
errors: cantResolve("./c"),
},

// Relative paths to a directory should work.
{
filename: fixture("test.js"),
code: "require('./bar');",
errors: ['"./bar" is not found.'],
errors: cantResolve("./bar"),
},
{
filename: fixture("test.js"),
code: "require('./bar/');",
errors: ['"./bar/" is not found.'],
errors: cantResolve("./bar/"),
},

// Case sensitive
{
filename: fixture("test.js"),
code: "require('./A');",
errors: ['"./A" is not found.'],
errors: cantResolve("./A"),
},

// require.resolve
{
filename: fixture("test.js"),
code: "require.resolve('no-exist-package-0');",
errors: ['"no-exist-package-0" is not found.'],
errors: cantResolve("no-exist-package-0"),
},
],
})
Expand Down