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fiskerfisker
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Fix comments after directive (#14081)
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7 files changed

+672
-27
lines changed

7 files changed

+672
-27
lines changed

‎changelog_unreleased/javascript/14081.md‎

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,13 @@
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#### Fix comments after directive (#14081 by @fisker)
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<!-- prettier-ignore -->
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```jsx
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// Input
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"use strict" /* comment */;
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// Prettier stable (with other js parsers except `babel`)
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Error: Comment "comment" was not printed. Please report this error!
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// Prettier main
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<Same as input>
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```

‎src/language-js/print/literal.js‎

Lines changed: 13 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,7 @@
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"use strict";
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const { printString, printNumber } = require("../../common/util.js");
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const { replaceTextEndOfLine } = require("../../document/doc-utils.js");
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const { printDirective } = require("./misc.js");
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function printLiteral(path, options /*, print*/) {
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const node = path.getNode();
@@ -41,14 +42,25 @@ function printLiteral(path, options /*, print*/) {
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}
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if (typeof value === "string") {
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return replaceTextEndOfLine(printString(node.raw, options));
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return isDirective(path)
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? printDirective(node.raw, options)
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: replaceTextEndOfLine(printString(node.raw, options));
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}
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return String(value);
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}
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}
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}
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function isDirective(path) {
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if (path.getName() !== "expression") {
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return;
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}
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const parent = path.getParentNode();
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return parent.type === "ExpressionStatement" && parent.directive;
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}
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function printBigInt(raw) {
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return raw.toLowerCase();
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}

‎src/language-js/print/misc.js‎

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Original file line numberDiff line numberDiff line change
@@ -93,6 +93,24 @@ function printRestSpread(path, options, print) {
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return ["...", print("argument"), printTypeAnnotation(path, options, print)];
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}
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function printDirective(rawText, options) {
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const rawContent = rawText.slice(1, -1);
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// Check for the alternate quote, to determine if we're allowed to swap
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// the quotes on a DirectiveLiteral.
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if (rawContent.includes('"') || rawContent.includes("'")) {
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return rawText;
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}
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const enclosingQuote = options.singleQuote ? "'" : '"';
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// Directives are exact code unit sequences, which means that you can't
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// change the escape sequences they use.
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// See https://github.com/prettier/prettier/issues/1555
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// and https://tc39.github.io/ecma262/#directive-prologue
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return enclosingQuote + rawContent + enclosingQuote;
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}
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module.exports = {
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printOptionalToken,
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printDefiniteToken,
@@ -102,4 +120,5 @@ module.exports = {
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printTypeAnnotation,
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printRestSpread,
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adjustClause,
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printDirective,
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};

‎src/language-js/printer-estree.js‎

Lines changed: 2 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,6 @@ const {
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isLineComment,
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isNextLineEmpty,
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needsHardlineAfterDanglingComment,
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rawText,
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hasIgnoreComment,
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isCallExpression,
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isMemberExpression,
@@ -47,6 +46,7 @@ const {
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adjustClause,
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printRestSpread,
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printDefiniteToken,
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printDirective,
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} = require("./print/misc.js");
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const {
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printImportDeclaration,
@@ -215,11 +215,6 @@ function printPathNoParens(path, options, print, args) {
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case "EmptyStatement":
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return "";
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case "ExpressionStatement": {
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// Detect Flow and TypeScript directives
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if (node.directive) {
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return [printDirective(node.expression, options), semi];
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}
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if (
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options.parser === "__vue_event_binding" ||
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options.parser === "__vue_ts_event_binding"
@@ -429,7 +424,7 @@ function printPathNoParens(path, options, print, args) {
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case "Directive":
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return [print("value"), semi]; // Babel 6
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case "DirectiveLiteral":
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return printDirective(node, options);
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return printDirective(node.extra.raw, options);
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case "UnaryExpression":
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parts.push(node.operator);
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@@ -813,25 +808,6 @@ function printPathNoParens(path, options, print, args) {
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}
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}
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function printDirective(node, options) {
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const raw = rawText(node);
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const rawContent = raw.slice(1, -1);
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// Check for the alternate quote, to determine if we're allowed to swap
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// the quotes on a DirectiveLiteral.
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if (rawContent.includes('"') || rawContent.includes("'")) {
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return raw;
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}
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826-
const enclosingQuote = options.singleQuote ? "'" : '"';
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// Directives are exact code unit sequences, which means that you can't
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// change the escape sequences they use.
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// See https://github.com/prettier/prettier/issues/1555
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// and https://tc39.github.io/ecma262/#directive-prologue
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return enclosingQuote + rawContent + enclosingQuote;
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}
834-
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function canAttachComment(node) {
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return (
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node.type &&

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