lint Vue templates as well
the argument detection doesn't work inside templates when invoked via the `<I18n>` component, because it's too complicated for me now
This commit is contained in:
dakkar
parent
f11536c927
commit
b0bc24f01b
241
eslint/locale.js
241
eslint/locale.js
@ -50,6 +50,15 @@ function findCallExpression(node) {
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return null;
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}
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// same, but for Vue expressions (`<I18n :src="i18n.ts.foo">`)
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function findVueExpression(node) {
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if (!node.parent) return null;
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if (node.parent.type.match(/^VExpr/) && node.parent.expression === node) return node.parent;
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if (node.parent.type === 'MemberExpression') return findVueExpression(node.parent);
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return null;
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}
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function areArgumentsOneObject(node) {
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return node.arguments.length === 1 &&
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node.arguments[0].type === 'ObjectExpression';
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@ -82,117 +91,141 @@ function setDifference(a,b) {
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/* the actual rule body
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*/
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function theRuleBody(context,node) {
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// we get the locale/translations via the options; it's the data
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// that goes into a specific language's JSON file, see
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// `scripts/build-assets.mjs`
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const locale = context.options[0];
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// sometimes we get MemberExpression nodes that have a
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// *descendent* with the right identifier: skip them, we'll get
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// the right ones as well
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if (node.object?.name != 'i18n') {
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return;
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}
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// `method` is going to be `'ts'` or `'tsx'`, `path` is going to
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// be the various translation steps/names
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const [ method, ...path ] = collectMembers(node);
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const pathStr = `i18n.${method}.${path.join('.')}`;
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// does that path point to a real translation?
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const translation = walkDown(locale, path);
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if (!translation) {
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context.report({
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node,
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message: `translation missing for ${pathStr}`,
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});
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return;
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}
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// we hit something weird, assume the programmers know what
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// they're doing (this is usually some complicated slicing of
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// the translation structure)
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if (typeof(translation) !== 'string') return;
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const callExpression = findCallExpression(node);
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const vueExpression = findVueExpression(node);
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// some more checks on how the translation is called
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if (method === 'ts') {
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// the `<I18n> component gets parametric translations via
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// `i18n.ts.*`, but we error out elsewhere
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if (translation.match(/\{/) && !vueExpression) {
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context.report({
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node,
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message: `translation for ${pathStr} is parametric, but called via 'ts'`,
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});
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return;
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}
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if (callExpression) {
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context.report({
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node,
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message: `translation for ${pathStr} is not parametric, but is called as a function`,
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});
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}
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}
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if (method === 'tsx') {
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if (!translation.match(/\{/)) {
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context.report({
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node,
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message: `translation for ${pathStr} is not parametric, but called via 'tsx'`,
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});
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return;
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}
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if (!callExpression && !vueExpression) {
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context.report({
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node,
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message: `translation for ${pathStr} is parametric, but not called as a function`,
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});
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return;
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}
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// we're not currently checking arguments when used via the
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// `<I18n>` component, because it's too complicated (also, it
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// would have to be done inside the `if (method === 'ts')`)
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if (!callExpression) return;
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if (!areArgumentsOneObject(callExpression)) {
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context.report({
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node,
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message: `translation for ${pathStr} should be called with a single object as argument`,
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});
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return;
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}
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const translationParameters = getTranslationParameters(translation);
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const parameterCount = translationParameters.size;
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const callArguments = getArgumentObjectProperties(callExpression);
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const argumentCount = callArguments.size;
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if (parameterCount !== argumentCount) {
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context.report({
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node,
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message: `translation for ${pathStr} has ${parameterCount} parameters, but is called with ${argumentCount} arguments`,
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});
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}
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// node 20 doesn't have `Set.difference`...
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const extraArguments = setDifference(callArguments, translationParameters);
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const missingArguments = setDifference(translationParameters, callArguments);
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if (extraArguments.length > 0) {
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context.report({
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node,
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message: `translation for ${pathStr} passes unused arguments ${extraArguments.join(' ')}`,
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});
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}
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if (missingArguments.length > 0) {
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context.report({
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node,
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message: `translation for ${pathStr} does not pass arguments ${missingArguments.join(' ')}`,
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});
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}
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}
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}
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function theRule(context) {
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// we get the locale/translations via the options; it's the data
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// that goes into a specific language's JSON file, see
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// `scripts/build-assets.mjs`
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const locale = context.options[0];
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return {
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// for all object member access that have an identifier 'i18n'...
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'MemberExpression:has(> Identifier[name=i18n])': (node) => {
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// sometimes we get MemberExpression nodes that have a
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// *descendent* with the right identifier: skip them, we'll get
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// the right ones as well
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if (node.object?.name != 'i18n') {
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return;
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}
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// `method` is going to be `'ts'` or `'tsx'`, `path` is going to
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// be the various translation steps/names
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const [ method, ...path ] = collectMembers(node);
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const pathStr = `i18n.${method}.${path.join('.')}`;
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// does that path point to a real translation?
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const translation = walkDown(locale, path);
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if (!translation) {
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context.report({
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node,
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message: `translation missing for ${pathStr}`,
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});
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return;
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}
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// we hit something weird, assume the programmers know what
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// they're doing (this is usually some complicated slicing of
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// the translation structure)
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if (typeof(translation) !== 'string') return;
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// some more checks on how the translation is called
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if (method == 'ts') {
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if (translation.match(/\{/)) {
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context.report({
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node,
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message: `translation for ${pathStr} is parametric, but called via 'ts'`,
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});
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return;
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}
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if (findCallExpression(node)) {
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context.report({
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node,
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message: `translation for ${pathStr} is not parametric, but is called as a function`,
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});
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}
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}
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if (method == 'tsx') {
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if (!translation.match(/\{/)) {
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context.report({
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node,
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message: `translation for ${pathStr} is not parametric, but called via 'tsx'`,
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});
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return;
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}
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const callExpression = findCallExpression(node);
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if (!callExpression) {
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context.report({
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node,
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message: `translation for ${pathStr} is parametric, but not called as a function`,
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});
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return;
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}
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if (!areArgumentsOneObject(callExpression)) {
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context.report({
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node,
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message: `translation for ${pathStr} should be called with a single object as argument`,
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});
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return;
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}
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const translationParameters = getTranslationParameters(translation);
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const parameterCount = translationParameters.size;
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const callArguments = getArgumentObjectProperties(callExpression);
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const argumentCount = callArguments.size;
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if (parameterCount !== argumentCount) {
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context.report({
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node,
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message: `translation for ${pathStr} has ${parameterCount} parameters, but is called with ${argumentCount} arguments`,
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});
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}
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// node 20 doesn't have `Set.difference`...
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const extraArguments = setDifference(callArguments, translationParameters);
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const missingArguments = setDifference(translationParameters, callArguments);
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if (extraArguments.length > 0) {
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context.report({
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node,
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message: `translation for ${pathStr} passes unused arguments ${extraArguments.join(' ')}`,
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});
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}
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if (missingArguments.length > 0) {
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context.report({
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node,
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message: `translation for ${pathStr} does not pass arguments ${missingArguments.join(' ')}`,
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});
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}
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}
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// for all object member access that have an identifier 'i18n'...
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return context.getSourceCode().parserServices.defineTemplateBodyVisitor(
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{
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// this is for <template> bits, needs work
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'MemberExpression:has(Identifier[name=i18n])': (node) => theRuleBody(context, node),
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},
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};
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{
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// this is for normal code
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'MemberExpression:has(Identifier[name=i18n])': (node) => theRuleBody(context, node),
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},
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);
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}
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module.exports = {
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@ -3,31 +3,46 @@ const localeRule = require("./locale");
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const locale = { foo: { bar: 'ok', baz: 'good {x}' }, top: '123' };
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const ruleTester = new RuleTester();
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const ruleTester = new RuleTester({
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languageOptions: {
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parser: require('vue-eslint-parser'),
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ecmaVersion: 2015,
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},
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});
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function testCase(code,errors) {
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return { code, errors, options: [ locale ], filename: 'test.ts' };
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}
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function testCaseVue(code,errors) {
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return { code, errors, options: [ locale ], filename: 'test.vue' };
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}
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ruleTester.run(
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'sharkey-locale',
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localeRule,
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{
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valid: [
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{code: 'i18n.ts.foo.bar', options: [locale] },
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testCase('i18n.ts.foo.bar'),
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// we don't detect the problem here, but should still accept it
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{code: 'i18n.ts.foo["something"]', options: [locale] },
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{code: 'i18n.ts.top', options: [locale] },
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{code: 'i18n.tsx.foo.baz({x:1})', options: [locale] },
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{code: 'whatever.i18n.ts.blah.blah', options: [locale] },
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{code: 'whatever.i18n.tsx.does.not.matter', options: [locale] },
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{code: 'whatever(i18n.ts.foo.bar)', options: [locale] },
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testCase('i18n.ts.foo["something"]'),
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testCase('i18n.ts.top'),
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testCase('i18n.tsx.foo.baz({x:1})'),
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testCase('whatever.i18n.ts.blah.blah'),
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testCase('whatever.i18n.tsx.does.not.matter'),
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testCase('whatever(i18n.ts.foo.bar)'),
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testCaseVue('<template><p>{{ i18n.ts.foo.bar }}</p></template>'),
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testCaseVue('<template><I18n :src="i18n.ts.foo.baz"/></template>'),
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],
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invalid: [
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{code: 'i18n.ts.not', options: [locale], errors: 1 },
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{code: 'i18n.tsx.deep.not', options: [locale], errors: 1 },
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{code: 'i18n.tsx.deep.not({x:12})', options: [locale], errors: 1 },
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{code: 'i18n.tsx.top({x:1})', options: [locale], errors: 1 },
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{code: 'i18n.ts.foo.baz', options: [locale], errors: 1 },
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{code: 'i18n.tsx.foo.baz', options: [locale], errors: 1 },
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{code: 'i18n.tsx.foo.baz({y:2})', options: [locale], errors: 2 },
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testCase('i18n.ts.not', 1),
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testCase('i18n.tsx.deep.not', 1),
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testCase('i18n.tsx.deep.not({x:12})', 1),
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testCase('i18n.tsx.top({x:1})', 1),
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testCase('i18n.ts.foo.baz', 1),
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testCase('i18n.tsx.foo.baz', 1),
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testCase('i18n.tsx.foo.baz({y:2})', 2),
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testCaseVue('<template><p>{{ i18n.ts.not }}</p></template>', 1),
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testCaseVue('<template><I18n :src="i18n.ts.not"/></template>', 1),
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],
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},
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);
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