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fix argument/parameter checking

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This commit is contained in:
dakkar 2024-10-16 14:58:59 +01:00
parent dba3277200
commit 30d53de356
2 changed files with 69 additions and 11 deletions
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73
eslint/locale.js
View file

@ -50,6 +50,36 @@ function findCallExpression(node) {
return null;
}
function areArgumentsOneObject(node) {
return node.arguments.length === 1 &&
node.arguments[0].type === 'ObjectExpression';
}
// only call if `areArgumentsOneObject(node)` is true
function getArgumentObjectProperties(node) {
return new Set(node.arguments[0].properties.map(
p => {
if (p.key && p.key.type === 'Identifier') return p.key.name;
return null;
},
));
}
function getTranslationParameters(translation) {
return new Set(Array.from(translation.matchAll(/\{(\w+)\}/g)).map( m => m[1] ));
}
function setDifference(a,b) {
const result = [];
for (const element of a.values()) {
if (!b.has(element)) {
result.push(element);
}
}
return result;
}
/* the actual rule body
*/
function theRule(context) {
@ -73,8 +103,8 @@ function theRule(context) {
const pathStr = `i18n.${method}.${path.join('.')}`;
// does that path point to a real translation?
const matchingNode = walkDown(locale, path);
if (!matchingNode) {
const translation = walkDown(locale, path);
if (!translation) {
context.report({
node,
message: `translation missing for ${pathStr}`,
@ -84,7 +114,7 @@ function theRule(context) {
// some more checks on how the translation is called
if (method == 'ts') {
if (matchingNode.match(/\{/)) {
if (translation.match(/\{/)) {
context.report({
node,
message: `translation for ${pathStr} is parametric, but called via 'ts'`,
@ -101,7 +131,7 @@ function theRule(context) {
}
if (method == 'tsx') {
if (!matchingNode.match(/\{/)) {
if (!translation.match(/\{/)) {
context.report({
node,
message: `translation for ${pathStr} is not parametric, but called via 'tsx'`,
@ -110,7 +140,6 @@ function theRule(context) {
}
const callExpression = findCallExpression(node);
if (!callExpression) {
context.report({
node,
@ -119,14 +148,42 @@ function theRule(context) {
return;
}
const parameterCount = [...matchingNode.matchAll(/\{/g)].length ?? 0;
const argumentCount = callExpression.arguments.length;
if (!areArgumentsOneObject(callExpression)) {
context.report({
node,
message: `translation for ${pathStr} should be called with a single object as argument`,
});
return;
}
const translationParameters = getTranslationParameters(translation);
const parameterCount = translationParameters.size;
const callArguments = getArgumentObjectProperties(callExpression);
const argumentCount = callArguments.size;
if (parameterCount !== argumentCount) {
context.report({
node,
message: `translation for ${pathStr} has ${parameterCount} parameters, but is called with ${argumentCount} arguments`,
});
return;
}
// node 20 doesn't have `Set.difference`...
const extraArguments = setDifference(callArguments, translationParameters);
const missingArguments = setDifference(translationParameters, callArguments);
if (extraArguments.length > 0) {
context.report({
node,
message: `translation for ${pathStr} passes unused arguments ${extraArguments.join(' ')}`,
});
}
if (missingArguments.length > 0) {
context.report({
node,
message: `translation for ${pathStr} does not pass arguments ${missingArguments.join(' ')}`,
});
}
}
},

7
eslint/locale.test.js
View file

@ -12,7 +12,7 @@ ruleTester.run(
valid: [
{code: 'i18n.ts.foo.bar', options: [locale] },
{code: 'i18n.ts.top', options: [locale] },
{code: 'i18n.tsx.foo.baz(1)', options: [locale] },
{code: 'i18n.tsx.foo.baz({x:1})', options: [locale] },
{code: 'whatever.i18n.ts.blah.blah', options: [locale] },
{code: 'whatever.i18n.tsx.does.not.matter', options: [locale] },
{code: 'whatever(i18n.ts.foo.bar)', options: [locale] },
@ -20,10 +20,11 @@ ruleTester.run(
invalid: [
{code: 'i18n.ts.not', options: [locale], errors: 1 },
{code: 'i18n.tsx.deep.not', options: [locale], errors: 1 },
{code: 'i18n.tsx.deep.not(12)', options: [locale], errors: 1 },
{code: 'i18n.tsx.top(1)', options: [locale], errors: 1 },
{code: 'i18n.tsx.deep.not({x:12})', options: [locale], errors: 1 },
{code: 'i18n.tsx.top({x:1})', options: [locale], errors: 1 },
{code: 'i18n.ts.foo.baz', options: [locale], errors: 1 },
{code: 'i18n.tsx.foo.baz', options: [locale], errors: 1 },
{code: 'i18n.tsx.foo.baz({y:2})', options: [locale], errors: 2 },
],
},
);