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svelte
mirror of https://github.com/sveltejs/svelte
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Code Issues Projects Releases Wiki Activity

add codes to validation errors

Browse Source
pull/1340/head
Rich Harris 8 years ago
parent 5a245b2871
commit b86a1edb52
98 changed files with 402 additions and 274 deletions
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10
src/css/Selector.ts
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@ -102,7 +102,10 @@ export default class Selector {
while (i-- > 1) {
const selector = block.selectors[i];
if (selector.type === 'PseudoClassSelector' && selector.name === 'global') {
validator.error(`:global(...) must be the first element in a compound selector`, selector);
validator.error(selector, {
code: `css-invalid-global`,
message: `:global(...) must be the first element in a compound selector`
});
}
}
});
@ -120,7 +123,10 @@ export default class Selector {
for (let i = start; i < end; i += 1) {
if (this.blocks[i].global) {
validator.error(`:global(...) can be at the start or end of a selector sequence, but not in the middle`, this.blocks[i].selectors[0]);
validator.error(this.blocks[i].selectors[0], {
code: `css-invalid-global`,
message: `:global(...) can be at the start or end of a selector sequence, but not in the middle`
});
}
}
}

3
src/utils/error.ts
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@ -2,6 +2,7 @@ import { locate } from 'locate-character';
import getCodeFrame from '../utils/getCodeFrame';
class CompileError extends Error {
code: string;
loc: { line: number, column: number };
end: { line: number, column: number };
pos: number;
@ -15,6 +16,7 @@ class CompileError extends Error {
export default function error(message: string, props: {
name: string,
code: string,
source: string,
filename: string,
start: number,
@ -26,6 +28,7 @@ export default function error(message: string, props: {
const start = locate(props.source, props.start);
const end = locate(props.source, props.end || props.start);
error.code = props.code;
error.loc = { line: start.line + 1, column: start.column };
error.end = { line: end.line + 1, column: end.column };
error.pos = props.start;

5
src/validate/html/index.ts
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@ -108,7 +108,10 @@ export default function validateHtml(validator: Validator, html: Node) {
let message = `'refs.${ref}' does not exist`;
if (match) message += ` (did you mean 'refs.${match}'?)`;
validator.error(message, callee);
validator.error(callee, {
code: `missing-ref`,
message
});
}
});
}

199
src/validate/html/validateElement.ts
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@ -37,12 +37,18 @@ export default function validateElement(
const nameAttribute = node.attributes.find((attribute: Node) => attribute.name === 'name');
if (nameAttribute) {
if (nameAttribute.value.length !== 1 || nameAttribute.value[0].type !== 'Text') {
validator.error(`<slot> name cannot be dynamic`, nameAttribute);
validator.error(nameAttribute, {
code: `dynamic-slot-name`,
message: `<slot> name cannot be dynamic`
});
}
const slotName = nameAttribute.value[0].data;
if (slotName === 'default') {
validator.error(`default is a reserved word — it cannot be used as a slot name`, nameAttribute);
validator.error(nameAttribute, {
code: `invalid-slot-name`,
message: `default is a reserved word — it cannot be used as a slot name`
});
}
// TODO should duplicate slots be disallowed? Feels like it's more likely to be a
@ -64,18 +70,18 @@ export default function validateElement(
if (node.name === 'title') {
if (node.attributes.length > 0) {
validator.error(
`<title> cannot have attributes`,
node.attributes[0]
);
validator.error(node.attributes[0], {
code: `illegal-attribute`,
message: `<title> cannot have attributes`
});
}
node.children.forEach(child => {
if (child.type !== 'Text' && child.type !== 'MustacheTag') {
validator.error(
`<title> can only contain text and {{tags}}`,
child
);
validator.error(child, {
code: 'illegal-structure',
message: `<title> can only contain text and {{tags}}`
});
}
});
}
@ -99,10 +105,10 @@ export default function validateElement(
node.name !== 'textarea' &&
node.name !== 'select'
) {
validator.error(
`'value' is not a valid binding on <${node.name}> elements`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'value' is not a valid binding on <${node.name}> elements`
});
}
if (node.name === 'select') {
@ -111,43 +117,43 @@ export default function validateElement(
);
if (attribute && isDynamic(attribute)) {
validator.error(
`'multiple' attribute cannot be dynamic if select uses two-way binding`,
attribute
);
validator.error(attribute, {
code: `dynamic-multiple-attribute`,
message: `'multiple' attribute cannot be dynamic if select uses two-way binding`
});
}
} else {
checkTypeAttribute(validator, node);
}
} else if (name === 'checked' || name === 'indeterminate') {
if (node.name !== 'input') {
validator.error(
`'${name}' is not a valid binding on <${node.name}> elements`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'${name}' is not a valid binding on <${node.name}> elements`
});
}
if (checkTypeAttribute(validator, node) !== 'checkbox') {
validator.error(
`'${name}' binding can only be used with <input type="checkbox">`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'${name}' binding can only be used with <input type="checkbox">`
});
}
} else if (name === 'group') {
if (node.name !== 'input') {
validator.error(
`'group' is not a valid binding on <${node.name}> elements`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'group' is not a valid binding on <${node.name}> elements`
});
}
const type = checkTypeAttribute(validator, node);
if (type !== 'checkbox' && type !== 'radio') {
validator.error(
`'checked' binding can only be used with <input type="checkbox"> or <input type="radio">`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'checked' binding can only be used with <input type="checkbox"> or <input type="radio">`
});
}
} else if (
name === 'currentTime' ||
@ -159,23 +165,26 @@ export default function validateElement(
name === 'volume'
) {
if (node.name !== 'audio' && node.name !== 'video') {
validator.error(
`'${name}' binding can only be used with <audio> or <video>`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'${name}' binding can only be used with <audio> or <video>`
});
}
} else {
validator.error(
`'${attribute.name}' is not a valid binding`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `'${attribute.name}' is not a valid binding`
});
}
} else if (attribute.type === 'EventHandler') {
validator.used.events.add(attribute.name);
validateEventHandler(validator, attribute, refCallees);
} else if (attribute.type === 'Transition') {
if (isComponent) {
validator.error(`Transitions can only be applied to DOM elements, not components`, attribute);
validator.error(attribute, {
code: `invalid-transition`,
message: `Transitions can only be applied to DOM elements, not components`
});
}
validator.used.transitions.add(attribute.name);
@ -183,31 +192,31 @@ export default function validateElement(
const bidi = attribute.intro && attribute.outro;
if (hasTransition) {
if (bidi)
validator.error(
`An element can only have one 'transition' directive`,
attribute
);
validator.error(
`An element cannot have both a 'transition' directive and an '${attribute.intro
? 'in'
: 'out'}' directive`,
attribute
);
if (bidi) {
validator.error(attribute, {
code: `duplicate-transition`,
message: `An element can only have one 'transition' directive`
});
}
validator.error(attribute, {
code: `duplicate-transition`,
message: `An element cannot have both a 'transition' directive and an '${attribute.intro ? 'in' : 'out'}' directive`
});
}
if ((hasIntro && attribute.intro) || (hasOutro && attribute.outro)) {
if (bidi)
validator.error(
`An element cannot have both an '${hasIntro
? 'in'
: 'out'}' directive and a 'transition' directive`,
attribute
);
validator.error(
`An element can only have one '${hasIntro ? 'in' : 'out'}' directive`,
attribute
);
if (bidi) {
validator.error(attribute, {
code: `duplicate-transition`,
message: `An element cannot have both an '${hasIntro ? 'in' : 'out'}' directive and a 'transition' directive`
});
}
validator.error(attribute, {
code: `duplicate-transition`,
message: `An element can only have one '${hasIntro ? 'in' : 'out'}' directive`
});
}
if (attribute.intro) hasIntro = true;
@ -215,18 +224,18 @@ export default function validateElement(
if (bidi) hasTransition = true;
if (!validator.transitions.has(attribute.name)) {
validator.error(
`Missing transition '${attribute.name}'`,
attribute
);
validator.error(attribute, {
code: `missing-transition`,
message: `Missing transition '${attribute.name}'`
});
}
} else if (attribute.type === 'Attribute') {
if (attribute.name === 'value' && node.name === 'textarea') {
if (node.children.length) {
validator.error(
`A <textarea> can have either a value attribute or (equivalently) child content, but not both`,
attribute
);
validator.error(attribute, {
code: `textarea-duplicate-value`,
message: `A <textarea> can have either a value attribute or (equivalently) child content, but not both`
});
}
}
@ -235,16 +244,19 @@ export default function validateElement(
}
} else if (attribute.type === 'Action') {
if (isComponent) {
validator.error(`Actions can only be applied to DOM elements, not components`, attribute);
validator.error(attribute, {
code: `invalid-action`,
message: `Actions can only be applied to DOM elements, not components`
});
}
validator.used.actions.add(attribute.name);
if (!validator.actions.has(attribute.name)) {
validator.error(
`Missing action '${attribute.name}'`,
attribute
);
validator.error(attribute, {
code: `missing-action`,
message: `Missing action '${attribute.name}'`
});
}
}
});
@ -257,14 +269,17 @@ function checkTypeAttribute(validator: Validator, node: Node) {
if (!attribute) return null;
if (attribute.value === true) {
validator.error(`'type' attribute must be specified`, attribute);
validator.error(attribute, {
code: `missing-type`,
message: `'type' attribute must be specified`
});
}
if (isDynamic(attribute)) {
validator.error(
`'type' attribute cannot be dynamic if input uses two-way binding`,
attribute
);
validator.error(attribute, {
code: `invalid-type`,
message: `'type' attribute cannot be dynamic if input uses two-way binding`
});
}
return attribute.value[0].data;
@ -272,10 +287,10 @@ function checkTypeAttribute(validator: Validator, node: Node) {
function checkSlotAttribute(validator: Validator, node: Node, attribute: Node, stack: Node[]) {
if (isDynamic(attribute)) {
validator.error(
`slot attribute cannot have a dynamic value`,
attribute
);
validator.error(attribute, {
code: `invalid-slot-attribute`,
message: `slot attribute cannot have a dynamic value`
});
}
let i = stack.length;
@ -289,11 +304,17 @@ function checkSlotAttribute(validator: Validator, node: Node, attribute: Node, s
if (parent.type === 'IfBlock' || parent.type === 'EachBlock') {
const message = `Cannot place slotted elements inside an ${parent.type === 'IfBlock' ? 'if' : 'each'}-block`;
validator.error(message, attribute);
validator.error(attribute, {
code: `invalid-slotted-content`,
message
});
}
}
validator.error(`Element with a slot='...' attribute must be a descendant of a component or custom element`, attribute);
validator.error(attribute, {
code: `invalid-slotted-content`,
message: `Element with a slot='...' attribute must be a descendant of a component or custom element`
});
}
function isDynamic(attribute: Node) {

5
src/validate/html/validateEventHandler.ts
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@ -16,7 +16,10 @@ export default function validateEventHandlerCallee(
const { callee, type } = attribute.expression;
if (type !== 'CallExpression') {
validator.error(`Expected a call expression`, attribute.expression);
validator.error(attribute.expression, {
code: `invalid-event-handler`,
message: `Expected a call expression`
});
}
const { name } = flattenReference(callee);

5
src/validate/html/validateHead.ts
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@ -4,7 +4,10 @@ import { Node } from '../../interfaces';
export default function validateHead(validator: Validator, node: Node, refs: Map<string, Node[]>, refCallees: Node[]) {
if (node.attributes.length) {
validator.error(`<:Head> should not have any attributes or directives`, node);
validator.error(node.attributes[0], {
code: `invalid-attribute`,
message: `<:Head> should not have any attributes or directives`
});
}
// TODO ensure only valid elements are included here

26
src/validate/html/validateWindow.ts
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@ -21,12 +21,10 @@ export default function validateWindow(validator: Validator, node: Node, refs: M
if (attribute.value.type !== 'Identifier') {
const { parts } = flattenReference(attribute.value);
validator.error(
`Bindings on <:Window/> must be to top-level properties, e.g. '${parts[
parts.length - 1
]}' rather than '${parts.join('.')}'`,
attribute.value
);
validator.error(attribute.value, {
code: `invalid-binding`,
message: `Bindings on <:Window/> must be to top-level properties, e.g. '${parts[parts.length - 1]}' rather than '${parts.join('.')}'`
});
}
if (!~validBindings.indexOf(attribute.name)) {
@ -39,15 +37,15 @@ export default function validateWindow(validator: Validator, node: Node, refs: M
const message = `'${attribute.name}' is not a valid binding on <:Window>`;
if (match) {
validator.error(
`${message} (did you mean '${match}'?)`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `${message} (did you mean '${match}'?)`
});
} else {
validator.error(
`${message} — valid bindings are ${list(validBindings)}`,
attribute
);
validator.error(attribute, {
code: `invalid-binding`,
message: `${message} — valid bindings are ${list(validBindings)}`
});
}
}
} else if (attribute.type === 'EventHandler') {

3
src/validate/index.ts
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@ -59,9 +59,10 @@ export class Validator {
};
}
error(message: string, pos: { start: number, end: number }) {
error(pos: { start: number, end: number }, { code, message } : { code: string, message: string }) {
error(message, {
name: 'ValidationError',
code,
source: this.source,
start: pos.start,
end: pos.end,

53
src/validate/js/index.ts
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@ -14,15 +14,18 @@ export default function validateJs(validator: Validator, js: Node) {
js.content.body.forEach((node: Node) => {
// check there are no named exports
if (node.type === 'ExportNamedDeclaration') {
validator.error(`A component can only have a default export`, node);
validator.error(node, {
code: `named-export`,
message: `A component can only have a default export`
});
}
if (node.type === 'ExportDefaultDeclaration') {
if (node.declaration.type !== 'ObjectExpression') {
return validator.error(
`Default export must be an object literal`,
node.declaration
);
validator.error(node.declaration, {
code: `invalid-default-export`,
message: `Default export must be an object literal`
});
}
checkForComputedKeys(validator, node.declaration.properties);
@ -36,17 +39,17 @@ export default function validateJs(validator: Validator, js: Node) {
// Remove these checks in version 2
if (props.has('oncreate') && props.has('onrender')) {
validator.error(
'Cannot have both oncreate and onrender',
props.get('onrender')
);
validator.error(props.get('onrender'), {
code: `duplicate-oncreate`,
message: 'Cannot have both oncreate and onrender'
});
}
if (props.has('ondestroy') && props.has('onteardown')) {
validator.error(
'Cannot have both ondestroy and onteardown',
props.get('onteardown')
);
validator.error(props.get('onteardown'), {
code: `duplicate-ondestroy`,
message: 'Cannot have both ondestroy and onteardown'
});
}
// ensure all exported props are valid
@ -59,20 +62,20 @@ export default function validateJs(validator: Validator, js: Node) {
} else {
const match = fuzzymatch(name, validPropList);
if (match) {
validator.error(
`Unexpected property '${name}' (did you mean '${match}'?)`,
prop
);
validator.error(prop, {
code: `unexpected-property`,
message: `Unexpected property '${name}' (did you mean '${match}'?)`
});
} else if (/FunctionExpression/.test(prop.value.type)) {
validator.error(
`Unexpected property '${name}' (did you mean to include it in 'methods'?)`,
prop
);
validator.error(prop, {
code: `unexpected-property`,
message: `Unexpected property '${name}' (did you mean to include it in 'methods'?)`
});
} else {
validator.error(
`Unexpected property '${name}'`,
prop
);
validator.error(prop, {
code: `unexpected-property`,
message: `Unexpected property '${name}'`
});
}
}
});

10
src/validate/js/propValidators/actions.ts
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@ -1,14 +1,14 @@
import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function actions(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'actions' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-actions`,
message: `The 'actions' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);

19
src/validate/js/propValidators/components.ts
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@ -1,15 +1,15 @@
import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import getName from '../../../utils/getName';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function components(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'components' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'components' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);
@ -19,10 +19,11 @@ export default function components(validator: Validator, prop: Node) {
const name = getName(component.key);
if (name === 'state') {
validator.error(
`Component constructors cannot be called 'state' due to technical limitations`,
component
);
// TODO is this still true?
validator.error(component, {
code: `invalid-name`,
message: `Component constructors cannot be called 'state' due to technical limitations`
});
}
if (!/^[A-Z]/.test(name)) {

67
src/validate/js/propValidators/computed.ts
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@ -3,7 +3,7 @@ import checkForComputedKeys from '../utils/checkForComputedKeys';
import getName from '../../../utils/getName';
import isValidIdentifier from '../../../utils/isValidIdentifier';
import reservedNames from '../../../utils/reservedNames';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
import walkThroughTopFunctionScope from '../../../utils/walkThroughTopFunctionScope';
import isThisGetCallExpression from '../../../utils/isThisGetCallExpression';
@ -15,10 +15,10 @@ const isFunctionExpression = new Set([
export default function computed(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'computed' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'computed' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);
@ -29,49 +29,49 @@ export default function computed(validator: Validator, prop: Node) {
if (!isValidIdentifier(name)) {
const suggestion = name.replace(/[^_$a-z0-9]/ig, '_').replace(/^\d/, '_$&');
validator.error(
`Computed property name '${name}' is invalid — must be a valid identifier such as ${suggestion}`,
computation
);
validator.error(computation, {
code: `invalid-computed-name`,
message: `Computed property name '${name}' is invalid — must be a valid identifier such as ${suggestion}`
});
}
if (reservedNames.has(name)) {
validator.error(
`Computed property name '${name}' is invalid — cannot be a JavaScript reserved word`,
computation
);
validator.error(computation, {
code: `invalid-computed-name`,
message: `Computed property name '${name}' is invalid — cannot be a JavaScript reserved word`
});
}
if (!isFunctionExpression.has(computation.value.type)) {
validator.error(
`Computed properties can be function expressions or arrow function expressions`,
computation.value
);
validator.error(computation.value, {
code: `invalid-computed-value`,
message: `Computed properties can be function expressions or arrow function expressions`
});
}
const { body, params } = computation.value;
walkThroughTopFunctionScope(body, (node: Node) => {
if (isThisGetCallExpression(node) && !node.callee.property.computed) {
validator.error(
`Cannot use this.get(...) — values must be passed into the function as arguments`,
node
);
validator.error(node, {
code: `impure-computed`,
message: `Cannot use this.get(...) — values must be passed into the function as arguments`
});
}
if (node.type === 'ThisExpression') {
validator.error(
`Computed properties should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?`,
node
);
validator.error(node, {
code: `impure-computed`,
message: `Computed properties should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?`
});
}
});
if (params.length === 0) {
validator.error(
`A computed value must depend on at least one property`,
computation.value
);
validator.error(computation.value, {
code: `impure-computed`,
message: `A computed value must depend on at least one property`
});
}
params.forEach((param: Node) => {
@ -81,10 +81,11 @@ export default function computed(validator: Validator, prop: Node) {
param.left.type === 'Identifier');
if (!valid) {
validator.error(
`Computed properties cannot use destructuring in function parameters`,
param
);
// TODO change this for v2
validator.error(param, {
code: `invalid-computed-arguments`,
message: `Computed properties cannot use destructuring in function parameters`
});
}
});
});

7
src/validate/js/propValidators/data.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
const disallowed = new Set(['Literal', 'ObjectExpression', 'ArrayExpression']);
@ -7,6 +7,9 @@ export default function data(validator: Validator, prop: Node) {
while (prop.type === 'ParenthesizedExpression') prop = prop.expression;
if (disallowed.has(prop.value.type)) {
validator.error(`'data' must be a function`, prop.value);
validator.error(prop.value, {
code: `invalid-property`,
message: `'data' must be a function`
});
}
}

10
src/validate/js/propValidators/events.ts
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@ -1,14 +1,14 @@
import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function events(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'events' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'events' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);

26
src/validate/js/propValidators/helpers.ts
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@ -1,17 +1,17 @@
import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import { walk } from 'estree-walker';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
import walkThroughTopFunctionScope from '../../../utils/walkThroughTopFunctionScope';
import isThisGetCallExpression from '../../../utils/isThisGetCallExpression';
export default function helpers(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'helpers' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'helpers' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);
@ -24,17 +24,17 @@ export default function helpers(validator: Validator, prop: Node) {
walkThroughTopFunctionScope(prop.value.body, (node: Node) => {
if (isThisGetCallExpression(node) && !node.callee.property.computed) {
validator.error(
`Cannot use this.get(...) — values must be passed into the helper function as arguments`,
node
);
validator.error(node, {
code: `impure-helper`,
message: `Cannot use this.get(...) — values must be passed into the helper function as arguments`
});
}
if (node.type === 'ThisExpression') {
validator.error(
`Helpers should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?`,
node
);
validator.error(node, {
code: `impure-helper`,
message: `Helpers should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?`
});
} else if (node.type === 'Identifier' && node.name === 'arguments') {
usesArguments = true;
}

10
src/validate/js/propValidators/immutable.ts
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@ -1,11 +1,11 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function immutable(validator: Validator, prop: Node) {
if (prop.value.type !== 'Literal' || typeof prop.value.value !== 'boolean') {
validator.error(
`'immutable' must be a boolean literal`,
prop.value
);
validator.error(prop.value, {
code: `invalid-property`,
message: `'immutable' must be a boolean literal`
});
}
}

27
src/validate/js/propValidators/methods.ts
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@ -3,17 +3,17 @@ import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import usesThisOrArguments from '../utils/usesThisOrArguments';
import getName from '../../../utils/getName';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
const builtin = new Set(['set', 'get', 'on', 'fire', 'observe', 'destroy']);
export default function methods(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'methods' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'methods' property must be an object literal`
});
}
checkForAccessors(validator, prop.value.properties, 'Methods');
@ -24,19 +24,18 @@ export default function methods(validator: Validator, prop: Node) {
const name = getName(prop.key);
if (builtin.has(name)) {
validator.error(
`Cannot overwrite built-in method '${name}'`,
prop
);
validator.error(prop, {
code: `invalid-method-name`,
message: `Cannot overwrite built-in method '${name}'`
});
}
if (prop.value.type === 'ArrowFunctionExpression') {
if (usesThisOrArguments(prop.value.body)) {
validator.error(
`Method '${prop.key
.name}' should be a function expression, not an arrow function expression`,
prop
);
validator.error(prop, {
code: `invalid-method-value`,
message: `Method '${prop.key.name}' should be a function expression, not an arrow function expression`
});
}
}
});

23
src/validate/js/propValidators/namespace.ts
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@ -1,7 +1,7 @@
import * as namespaces from '../../../utils/namespaces';
import nodeToString from '../../../utils/nodeToString'
import fuzzymatch from '../../utils/fuzzymatch';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
const valid = new Set(namespaces.validNamespaces);
@ -10,21 +10,24 @@ export default function namespace(validator: Validator, prop: Node) {
const ns = nodeToString(prop.value);
if (typeof ns !== 'string') {
validator.error(
`The 'namespace' property must be a string literal representing a valid namespace`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'namespace' property must be a string literal representing a valid namespace`
});
}
if (!valid.has(ns)) {
const match = fuzzymatch(ns, namespaces.validNamespaces);
if (match) {
validator.error(
`Invalid namespace '${ns}' (did you mean '${match}'?)`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `Invalid namespace '${ns}' (did you mean '${match}'?)`
});
} else {
validator.error(`Invalid namespace '${ns}'`, prop);
validator.error(prop, {
code: `invalid-property`,
message: `Invalid namespace '${ns}'`
});
}
}
}

10
src/validate/js/propValidators/oncreate.ts
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@ -1,14 +1,14 @@
import usesThisOrArguments from '../utils/usesThisOrArguments';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function oncreate(validator: Validator, prop: Node) {
if (prop.value.type === 'ArrowFunctionExpression') {
if (usesThisOrArguments(prop.value.body)) {
validator.error(
`'oncreate' should be a function expression, not an arrow function expression`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `'oncreate' should be a function expression, not an arrow function expression`
});
}
}
}

10
src/validate/js/propValidators/ondestroy.ts
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@ -1,14 +1,14 @@
import usesThisOrArguments from '../utils/usesThisOrArguments';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function ondestroy(validator: Validator, prop: Node) {
if (prop.value.type === 'ArrowFunctionExpression') {
if (usesThisOrArguments(prop.value.body)) {
validator.error(
`'ondestroy' should be a function expression, not an arrow function expression`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `'ondestroy' should be a function expression, not an arrow function expression`
});
}
}
}

2
src/validate/js/propValidators/preload.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function preload(validator: Validator, prop: Node) {

18
src/validate/js/propValidators/props.ts
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@ -1,21 +1,21 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
import nodeToString from '../../../utils/nodeToString';
export default function props(validator: Validator, prop: Node) {
if (prop.value.type !== 'ArrayExpression') {
validator.error(
`'props' must be an array expression, if specified`,
prop.value
);
validator.error(prop.value, {
code: `invalid-property`,
message: `'props' must be an array expression, if specified`
});
}
prop.value.elements.forEach((element: Node) => {
if (typeof nodeToString(element) !== 'string') {
validator.error(
`'props' must be an array of string literals`,
element
);
validator.error(element, {
code: `invalid-property`,
message: `'props' must be an array of string literals`
});
}
});
}

7
src/validate/js/propValidators/setup.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
const disallowed = new Set(['Literal', 'ObjectExpression', 'ArrayExpression']);
@ -7,6 +7,9 @@ export default function setup(validator: Validator, prop: Node) {
while (prop.type === 'ParenthesizedExpression') prop = prop.expression;
if (disallowed.has(prop.value.type)) {
validator.error(`'setup' must be a function`, prop.value);
validator.error(prop.value, {
code: `invalid-property`,
message: `'setup' must be a function`
});
}
}

2
src/validate/js/propValidators/store.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function store(validator: Validator, prop: Node) {

18
src/validate/js/propValidators/tag.ts
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@ -1,20 +1,20 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
import nodeToString from '../../../utils/nodeToString';
export default function tag(validator: Validator, prop: Node) {
const tag = nodeToString(prop.value);
if (typeof tag !== 'string') {
validator.error(
`'tag' must be a string literal`,
prop.value
);
validator.error(prop.value, {
code: `invalid-property`,
message: `'tag' must be a string literal`
});
}
if (!/^[a-zA-Z][a-zA-Z0-9]*-[a-zA-Z0-9-]+$/.test(tag)) {
validator.error(
`tag name must be two or more words joined by the '-' character`,
prop.value
);
validator.error(prop.value, {
code: `invalid-property`,
message: `tag name must be two or more words joined by the '-' character`
});
}
}

10
src/validate/js/propValidators/transitions.ts
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@ -1,14 +1,14 @@
import checkForDupes from '../utils/checkForDupes';
import checkForComputedKeys from '../utils/checkForComputedKeys';
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function transitions(validator: Validator, prop: Node) {
if (prop.value.type !== 'ObjectExpression') {
validator.error(
`The 'transitions' property must be an object literal`,
prop
);
validator.error(prop, {
code: `invalid-property`,
message: `The 'transitions' property must be an object literal`
});
}
checkForDupes(validator, prop.value.properties);

7
src/validate/js/utils/checkForAccessors.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function checkForAccessors(
@ -8,7 +8,10 @@ export default function checkForAccessors(
) {
properties.forEach(prop => {
if (prop.kind !== 'init') {
validator.error(`${label} cannot use getters and setters`, prop);
validator.error(prop, {
code: `illegal-accessor`,
message: `${label} cannot use getters and setters`
});
}
});
}

7
src/validate/js/utils/checkForComputedKeys.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
export default function checkForComputedKeys(
@ -7,7 +7,10 @@ export default function checkForComputedKeys(
) {
properties.forEach(prop => {
if (prop.key.computed) {
validator.error(`Cannot use computed keys`, prop);
validator.error(prop, {
code: `computed-key`,
message: `Cannot use computed keys`
});
}
});
}

7
src/validate/js/utils/checkForDupes.ts
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@ -1,4 +1,4 @@
import { Validator } from '../../';
import { Validator } from '../../index';
import { Node } from '../../../interfaces';
import getName from '../../../utils/getName';
@ -12,7 +12,10 @@ export default function checkForDupes(
const name = getName(prop.key);
if (seen.has(name)) {
validator.error(`Duplicate property '${name}'`, prop);
validator.error(prop, {
code: `duplicate-property`,
message: `Duplicate property '${name}'`
});
}
seen.add(name);

2
test/validator/index.js
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@ -2,7 +2,7 @@ import * as fs from "fs";
import assert from "assert";
import { svelte, loadConfig, tryToLoadJson } from "../helpers.js";
describe("validate", () => {
describe.only("validate", () => {
fs.readdirSync("test/validator/samples").forEach(dir => {
if (dir[0] === ".") return;

1
test/validator/samples/action-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "missing-action",
"message": "Missing action 'whatever'",
"pos": 5,
"loc": {

1
test/validator/samples/action-on-component/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-action",
"message": "Actions can only be applied to DOM elements, not components",
"pos": 8,
"loc": {

1
test/validator/samples/binding-input-checked/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'checked' binding can only be used with <input type=\"checkbox\">",
"loc": {
"line": 1,

1
test/validator/samples/binding-input-type-boolean/errors.json
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@ -1,4 +1,5 @@
[{
"code": "missing-type",
"message": "'type' attribute must be specified",
"loc": {
"line": 1,

1
test/validator/samples/binding-input-type-dynamic/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-type",
"message": "'type' attribute cannot be dynamic if input uses two-way binding",
"loc": {
"line": 1,

1
test/validator/samples/binding-invalid-on-element/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'value' is not a valid binding on <div> elements",
"pos": 5,
"loc": {

1
test/validator/samples/binding-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'whatever' is not a valid binding",
"pos": 5,
"loc": {

1
test/validator/samples/binding-select-multiple-dynamic/errors.json
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@ -1,4 +1,5 @@
[{
"code": "dynamic-multiple-attribute",
"message": "'multiple' attribute cannot be dynamic if select uses two-way binding",
"loc": {
"line": 1,

1
test/validator/samples/component-cannot-be-called-state/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-name",
"message": "Component constructors cannot be called 'state' due to technical limitations",
"pos": 73,
"loc": {

1
test/validator/samples/component-slot-default-reserved/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slot-name",
"message": "default is a reserved word — it cannot be used as a slot name",
"loc": {
"line": 1,

1
test/validator/samples/component-slot-dynamic-attribute/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slot-attribute",
"message": "slot attribute cannot have a dynamic value",
"loc": {
"line": 2,

1
test/validator/samples/component-slot-dynamic/errors.json
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@ -1,4 +1,5 @@
[{
"code": "dynamic-slot-name",
"message": "<slot> name cannot be dynamic",
"loc": {
"line": 1,

1
test/validator/samples/component-slot-each-block/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slot-placement",
"message": "<slot> cannot be a child of an each-block",
"loc": {
"line": 2,

1
test/validator/samples/component-slotted-each-block/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slotted-content",
"message": "Cannot place slotted elements inside an each-block",
"loc": {
"line": 3,

1
test/validator/samples/component-slotted-if-block/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slotted-content",
"message": "Cannot place slotted elements inside an if-block",
"loc": {
"line": 3,

1
test/validator/samples/computed-purity-check-no-this/errors.json
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@ -1,4 +1,5 @@
[{
"code": "impure-computed",
"message": "Computed properties should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?",
"pos": 83,
"loc": {

1
test/validator/samples/computed-purity-check-this-get/errors.json
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@ -1,4 +1,5 @@
[{
"code": "impure-computed",
"message": "Cannot use this.get(...) — values must be passed into the function as arguments",
"pos": 73,
"loc": {

1
test/validator/samples/css-invalid-global-placement/errors.json
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@ -1,4 +1,5 @@
[{
"code": "css-invalid-global",
"message": ":global(...) can be at the start or end of a selector sequence, but not in the middle",
"loc": {
"line": 2,

1
test/validator/samples/css-invalid-global/errors.json
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@ -1,4 +1,5 @@
[{
"code": "css-invalid-global",
"message": ":global(...) must be the first element in a compound selector",
"loc": {
"line": 2,

1
test/validator/samples/event-handler-ref-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "missing-ref",
"message": "'refs.inputx' does not exist (did you mean 'refs.input'?)",
"pos": 36,
"loc": {

1
test/validator/samples/export-default-must-be-object/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-default-export",
"message": "Default export must be an object literal",
"pos": 25,
"loc": {

1
test/validator/samples/helper-purity-check-no-this/errors.json
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@ -1,4 +1,5 @@
[{
"code": "impure-helper",
"message": "Helpers should be pure functions — they do not have access to the component instance and cannot use 'this'. Did you mean to put this in 'methods'?",
"pos": 95,
"loc": {

1
test/validator/samples/helper-purity-check-this-get/errors.json
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@ -1,4 +1,5 @@
[{
"code": "impure-helper",
"message": "Cannot use this.get(...) — values must be passed into the helper function as arguments",
"pos": 74,
"loc": {

1
test/validator/samples/method-arrow-this/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-method-value",
"message": "Method 'foo' should be a function expression, not an arrow function expression",
"pos": 79,
"loc": {

1
test/validator/samples/named-export/errors.json
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@ -1,4 +1,5 @@
[{
"code": "named-export",
"message": "A component can only have a default export",
"pos": 10,
"loc": {

1
test/validator/samples/namespace-invalid-unguessable/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "Invalid namespace 'lol'",
"pos": 29,
"loc": {

1
test/validator/samples/namespace-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "Invalid namespace 'http://www.w3.org/1999/svg' (did you mean 'http://www.w3.org/2000/svg'?)",
"pos": 29,
"loc": {

1
test/validator/samples/namespace-non-literal/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'namespace' property must be a string literal representing a valid namespace",
"pos": 79,
"loc": {

1
test/validator/samples/non-object-literal-components/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'components' property must be an object literal",
"loc": {
"line": 3,

1
test/validator/samples/non-object-literal-events/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'events' property must be an object literal",
"loc": {
"line": 3,

1
test/validator/samples/non-object-literal-helpers/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'helpers' property must be an object literal",
"loc": {
"line": 3,

1
test/validator/samples/non-object-literal-methods/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'methods' property must be an object literal",
"loc": {
"line": 3,

1
test/validator/samples/non-object-literal-transitions/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'transitions' property must be an object literal",
"loc": {
"line": 3,

1
test/validator/samples/oncreate-arrow-this/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "'oncreate' should be a function expression, not an arrow function expression",
"pos": 29,
"loc": {

1
test/validator/samples/ondestroy-arrow-this/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "'ondestroy' should be a function expression, not an arrow function expression",
"pos": 29,
"loc": {

1
test/validator/samples/properties-computed-cannot-be-reserved/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-computed-name",
"message":
"Computed property name 'new' is invalid — cannot be a JavaScript reserved word",
"loc": {

1
test/validator/samples/properties-computed-must-be-an-object/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "The 'computed' property must be an object literal",
"loc": {
"line": 5,

1
test/validator/samples/properties-computed-must-be-functions/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-computed-value",
"message": "Computed properties can be function expressions or arrow function expressions",
"loc": {
"line": 6,

1
test/validator/samples/properties-computed-must-be-valid-function-names/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-computed-name",
"message": "Computed property name 'with-hyphen' is invalid — must be a valid identifier such as with_hyphen",
"loc": {
"line": 9,

1
test/validator/samples/properties-computed-no-destructuring/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-computed-arguments",
"message": "Computed properties cannot use destructuring in function parameters",
"loc": {
"line": 6,

1
test/validator/samples/properties-computed-values-needs-arguments/errors.json
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@ -1,4 +1,5 @@
[{
"code": "impure-computed",
"message": "A computed value must depend on at least one property",
"pos": 49,
"loc": {

1
test/validator/samples/properties-data-must-be-function/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "'data' must be a function",
"loc": {
"line": 5,

1
test/validator/samples/properties-duplicated/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-property",
"message": "Duplicate property 'methods'",
"loc": {
"line": 9,

1
test/validator/samples/properties-methods-getters-setters/errors.json
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@ -1,4 +1,5 @@
[{
"code": "illegal-accessor",
"message": "Methods cannot use getters and setters",
"loc": {
"line": 4,

1
test/validator/samples/properties-props-must-be-an-array/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "'props' must be an array expression, if specified",
"loc": {
"line": 5,

1
test/validator/samples/properties-props-must-be-array-of-strings/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "'props' must be an array of string literals",
"loc": {
"line": 5,

1
test/validator/samples/properties-unexpected-b/errors.json
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@ -1,4 +1,5 @@
[{
"code": "unexpected-property",
"message": "Unexpected property 'doSomething' (did you mean to include it in 'methods'?)",
"loc": {
"line": 5,

1
test/validator/samples/properties-unexpected/errors.json
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@ -1,4 +1,5 @@
[{
"code": "unexpected-property",
"message": "Unexpected property 'dada' (did you mean 'data'?)",
"loc": {
"line": 5,

1
test/validator/samples/slot-attribute-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-slotted-content",
"message": "Element with a slot='...' attribute must be a descendant of a component or custom element",
"loc": {
"line": 1,

1
test/validator/samples/tag-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-property",
"message": "tag name must be two or more words joined by the '-' character",
"loc": {
"line": 3,

1
test/validator/samples/tag-non-string/errors.json
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[{
"code": "invalid-property",
"message": "'tag' must be a string literal",
"loc": {
"line": 3,

1
test/validator/samples/textarea-value-children/errors.json
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[{
"code": "textarea-duplicate-value",
"message": "A <textarea> can have either a value attribute or (equivalently) child content, but not both",
"loc": {
"line": 1,

1
test/validator/samples/title-no-attributes/errors-v2.json
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[{
"code": "illegal-attribute",
"message": "<title> cannot have attributes",
"loc": {
"line": 2,

1
test/validator/samples/title-no-attributes/errors.json
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[{
"code": "illegal-attribute",
"message": "<title> cannot have attributes",
"loc": {
"line": 2,

1
test/validator/samples/title-no-children/errors.json
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[{
"code": "illegal-structure",
"message": "<title> can only contain text and {{tags}}",
"loc": {
"line": 2,

1
test/validator/samples/transition-duplicate-in-transition/errors.json
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[{
"code": "duplicate-transition",
"message": "An element cannot have both an 'in' directive and a 'transition' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-in/errors.json
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[{
"code": "duplicate-transition",
"message": "An element can only have one 'in' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-out-transition/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-transition",
"message": "An element cannot have both an 'out' directive and a 'transition' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-out/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-transition",
"message": "An element can only have one 'out' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-transition-in/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-transition",
"message": "An element cannot have both a 'transition' directive and an 'in' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-transition-out/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-transition",
"message": "An element cannot have both a 'transition' directive and an 'out' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-duplicate-transition/errors.json
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@ -1,4 +1,5 @@
[{
"code": "duplicate-transition",
"message": "An element can only have one 'transition' directive",
"loc": {
"line": 1,

1
test/validator/samples/transition-missing/errors.json
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@ -1,4 +1,5 @@
[{
"code": "missing-transition",
"message": "Missing transition 'foo'",
"loc": {
"line": 1,

1
test/validator/samples/transition-on-component/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-transition",
"message": "Transitions can only be applied to DOM elements, not components",
"loc": {
"line": 1,

1
test/validator/samples/window-binding-invalid-innerwidth/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'innerwidth' is not a valid binding on <:Window> (did you mean 'innerWidth'?)",
"loc": {
"line": 1,

1
test/validator/samples/window-binding-invalid-value/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "Bindings on <:Window/> must be to top-level properties, e.g. 'baz' rather than 'foo.bar.baz'",
"loc": {
"line": 1,

1
test/validator/samples/window-binding-invalid-width/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'width' is not a valid binding on <:Window> (did you mean 'innerWidth'?)",
"loc": {
"line": 1,

1
test/validator/samples/window-binding-invalid/errors.json
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@ -1,4 +1,5 @@
[{
"code": "invalid-binding",
"message": "'potato' is not a valid binding on <:Window> — valid bindings are innerWidth, innerHeight, outerWidth, outerHeight, scrollX, scrollY or online",
"loc": {
"line": 1,

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