convert requires/imports and exports to esm

README.md

@@ -144,18 +144,16 @@ You can also tell Prettier to leave entire regions as they are:
 Let's look at an example of a plugin to the plugin:
 
 ```javascript
-const melodyIconPlugin = require("../melody-plugin-icon-tag");
+import melodyIconPlugin from "../melody-plugin-icon-tag.js";
 
 const printIconTag = (node, path, print, options) => {
     // Implementation of printing
     // ...
 };
 
-module.exports = {
-    melodyExtensions: [melodyIconPlugin],
-    printers: {
-        IconTag: printIconTag
-    }
+export const melodyExtensions = [melodyIconPlugin];
+export const printers = {
+    IconTag: printIconTag
 };
 ```
 

plugins.md

@@ -32,16 +32,14 @@ tbd
 A plugin has to export an object of the following shape:
 
 ```
-module.exports = {
-    melodyExtensions: [
-        ext1,
-        ext2,
-        ...
-    ],
-    printers: {
-        nodeTypeName1: printNodeType1,
-        nodeTypeName2: printNodeType2,
-        ...
-    }
+export const melodyExtensions = [
+    ext1,
+    ext2,
+    ...
+];
+export const printers: {
+  nodeTypeName1: printNodeType1,
+  nodeTypeName2: printNodeType2,
+  ...
 };
 ```

src/index.js

@@ -1,7 +1,7 @@
-const { print } = require("./printer.js");
-const { parse } = require("./parser.js");
-const symbols = require("./util/publicSymbols.js");
-const publicFunctions = require("./util/publicFunctions.js");
+import { print } from "./printer.js";
+import { parse } from "./parser.js";
+import * as symbols from "./util/publicSymbols.js";
+import * as publicFunctions from "./util/publicFunctions.js";
 
 const languages = [
     {
@@ -135,4 +135,4 @@ const combinedExports = Object.assign(
 
 // This exports defines the Prettier plugin
 // See https://github.com/prettier/prettier/blob/master/docs/plugins.md
-module.exports = combinedExports;
+export default combinedExports;

src/parser.js

@@ -1,9 +1,9 @@
-const { CharStream, Lexer, TokenStream, Parser } = require("melody-parser");
-const { extension: coreExtension } = require("melody-extension-core");
-const {
+import { CharStream, Lexer, TokenStream, Parser } from "melody-parser";
+import { extension as coreExtension } from "melody-extension-core";
+import {
     getAdditionalMelodyExtensions,
     getPluginPathsFromOptions
-} = require("./util");
+} from "./util/index.js";
 
 const ORIGINAL_SOURCE = Symbol("ORIGINAL_SOURCE");
 
@@ -86,7 +86,4 @@ const parse = (text, parsers, options) => {
     return ast;
 };
 
-module.exports = {
-    parse,
-    ORIGINAL_SOURCE
-};
+export { parse, ORIGINAL_SOURCE };

src/plugins/switch-plugin/index.js

@@ -1,12 +1,13 @@
-const prettier = require("prettier");
-const { indent, hardline } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import { Node } from "melody-types";
+import {
     STRING_NEEDS_QUOTES,
     printSingleTwigTag,
     indentWithHardline,
     isEmptySequence
-} = require("../../util");
-const { Node } = require("melody-types");
+} from "../../util/index.js";
+
+const { indent, hardline } = doc.builders;
 
 const printSwitch = (node, path, print) => {
     node[STRING_NEEDS_QUOTES] = true;
@@ -30,8 +31,6 @@ const printSwitch = (node, path, print) => {
     return parts;
 };
 
-module.exports = {
-    printers: {
-        switchTag: printSwitch
-    }
+export const printers = {
+    switchTag: printSwitch
 };

src/print/AliasExpression.js

@@ -2,6 +2,4 @@ const p = (node, path, print) => {
     return [path.call(print, "name"), " as ", path.call(print, "alias")];
 };
 
-module.exports = {
-    printAliasExpression: p
-};
+export { p as printAliasExpression };

src/print/ArrayExpression.js

@@ -1,6 +1,7 @@
-const prettier = require("prettier");
-const { group, softline, line, indent, join } = prettier.doc.builders;
-const { STRING_NEEDS_QUOTES } = require("../util");
+import { doc } from "prettier";
+import { STRING_NEEDS_QUOTES } from "../util/index.js";
+
+const { group, softline, line, indent, join } = doc.builders;
 
 const p = (node, path, print) => {
     node[STRING_NEEDS_QUOTES] = true;
@@ -10,6 +11,4 @@ const p = (node, path, print) => {
     return group(["[", indent(indentedContent), softline, "]"]);
 };
 
-module.exports = {
-    printArrayExpression: p
-};
+export { p as printArrayExpression };

src/print/Attribute.js

@@ -1,5 +1,5 @@
-const { EXPRESSION_NEEDED, STRING_NEEDS_QUOTES } = require("../util");
-const { Node } = require("melody-types");
+import { Node } from "melody-types";
+import { EXPRESSION_NEEDED, STRING_NEEDS_QUOTES } from "../util/index.js";
 
 const mayCorrectWhitespace = attrName =>
     ["id", "class", "type"].indexOf(attrName) > -1;
@@ -47,6 +47,4 @@ const p = (node, path, print = print) => {
     return docs;
 };
 
-module.exports = {
-    printAttribute: p
-};
+export { p as printAttribute };

src/print/AutoescapeBlock.js

@@ -1,6 +1,7 @@
-const prettier = require("prettier");
-const { hardline } = prettier.doc.builders;
-const { printChildBlock, quoteChar } = require("../util");
+import { doc } from "prettier";
+import { printChildBlock, quoteChar } from "../util/index.js";
+
+const { hardline } = doc.builders;
 
 const createOpener = (node, options) => {
     return [
@@ -27,6 +28,4 @@ const p = (node, path, print, options) => {
     return parts;
 };
 
-module.exports = {
-    printAutoescapeBlock: p
-};
+export { p as printAutoescapeBlock };

src/print/BinaryExpression.js

@@ -1,7 +1,7 @@
-const prettier = require("prettier");
-const { group, line, softline, indent } = prettier.doc.builders;
-const { Node } = require("melody-types");
-const {
+import { doc } from "prettier";
+import { Node } from "melody-types";
+import { extension as coreExtension } from "melody-extension-core";
+import {
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES,
     INSIDE_OF_STRING,
@@ -10,8 +10,9 @@ const {
     firstValueInAncestorChain,
     findParentNode,
     wrapExpressionIfNeeded
-} = require("../util");
-const { extension: coreExtension } = require("melody-extension-core");
+} from "../util/index.js";
+
+const { group, line, softline, indent } = doc.builders;
 const ALREADY_INDENTED = Symbol("ALREADY_INDENTED");
 const OPERATOR_PRECEDENCE = Symbol("OPERATOR_PRECEDENCE");
 const NO_WHITESPACE_AROUND = [".."];
@@ -151,6 +152,4 @@ const p = (node, path, print, options) => {
     return printBinaryExpression(node, path, print);
 };
 
-module.exports = {
-    printBinaryExpression: p
-};
+export { p as printBinaryExpression };

src/print/BlockStatement.js

@@ -1,7 +1,8 @@
-const prettier = require("prettier");
-const { hardline, group } = prettier.doc.builders;
-const { Node } = require("melody-types");
-const { EXPRESSION_NEEDED, printChildBlock } = require("../util");
+import { doc } from "prettier";
+import { Node } from "melody-types";
+import { EXPRESSION_NEEDED, printChildBlock } from "../util/index.js";
+
+const { hardline, group } = doc.builders;
 
 const p = (node, path, print, options) => {
     node[EXPRESSION_NEEDED] = false;
@@ -44,6 +45,4 @@ const p = (node, path, print, options) => {
     }
 };
 
-module.exports = {
-    printBlockStatement: p
-};
+export { p as printBlockStatement };

src/print/CallExpression.js

@@ -1,11 +1,12 @@
-const prettier = require("prettier");
-const { group, softline, line, indent, join } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import { Node } from "melody-types";
+import {
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES,
     wrapExpressionIfNeeded
-} = require("../util");
-const { Node } = require("melody-types");
+} from "../util/index.js";
+
+const { group, softline, line, indent, join } = doc.builders;
 
 const p = (node, path, print) => {
     node[EXPRESSION_NEEDED] = false;
@@ -34,6 +35,4 @@ const p = (node, path, print) => {
     return group(parts);
 };
 
-module.exports = {
-    printCallExpression: p
-};
+export { p as printCallExpression };

src/print/ConditionalExpression.js

@@ -1,10 +1,11 @@
-const prettier = require("prettier");
-const { line, indent, group } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import {
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES,
     wrapExpressionIfNeeded
-} = require("../util");
+} from "../util/index.js";
+
+const { line, indent, group } = doc.builders;
 
 const p = (node, path, print) => {
     node[EXPRESSION_NEEDED] = false;
@@ -23,6 +24,4 @@ const p = (node, path, print) => {
     return group(parts);
 };
 
-module.exports = {
-    printConditionalExpression: p
-};
+export { p as printConditionalExpression };

src/print/Declaration.js

@@ -1,6 +1,7 @@
-const prettier = require("prettier");
-const { fill, join } = prettier.doc.builders;
-const { STRING_NEEDS_QUOTES, OVERRIDE_QUOTE_CHAR } = require("../util");
+import { doc } from "prettier";
+import { STRING_NEEDS_QUOTES, OVERRIDE_QUOTE_CHAR } from "../util/index.js";
+
+const { fill, join } = doc.builders;
 
 const p = (node, path, print) => {
     node[STRING_NEEDS_QUOTES] = true;
@@ -11,6 +12,4 @@ const p = (node, path, print) => {
     return fill([start, " ", join(" ", printedParts), ">"]);
 };
 
-module.exports = {
-    printDeclaration: p
-};
+export { p as printDeclaration };

src/print/DoStatement.js

@@ -7,6 +7,4 @@ const p = (node, path, print) => {
     ];
 };
 
-module.exports = {
-    printDoStatement: p
-};
+export { p as printDoStatement };

src/print/Element.js

@@ -1,12 +1,13 @@
-const prettier = require("prettier");
-const { group, line, hardline, softline, indent, join } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import {
     removeSurroundingWhitespace,
     isInlineElement,
     printChildGroups,
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES
-} = require("../util");
+} from "../util/index.js";
+
+const { group, line, hardline, softline, indent, join } = doc.builders;
 
 const printOpeningTag = (node, path, print) => {
     const opener = "<" + node.name;
@@ -59,6 +60,4 @@ const p = (node, path, print) => {
     return openingGroup;
 };
 
-module.exports = {
-    printElement: p
-};
+export { p as printElement };

src/print/EmbedStatement.js

@@ -1,10 +1,11 @@
-const prettier = require("prettier");
-const { indent, hardline, line, group } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import {
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES,
     printChildBlock
-} = require("../util");
+} from "../util/index.js";
+
+const { indent, hardline, line, group } = doc.builders;
 
 const printOpener = (node, path, print) => {
     node[EXPRESSION_NEEDED] = false;
@@ -34,6 +35,4 @@ const p = (node, path, print) => {
     return [printedOpener, children, closing];
 };
 
-module.exports = {
-    printEmbedStatement: p
-};
+export { p as printEmbedStatement };

src/print/ExpressionStatement.js

@@ -1,11 +1,12 @@
-const prettier = require("prettier");
-const { group, indent, line } = prettier.doc.builders;
-const {
+import { doc } from "prettier";
+import { Node } from "melody-types";
+import {
     EXPRESSION_NEEDED,
     STRING_NEEDS_QUOTES,
     isContractableNodeType
-} = require("../util");
-const { Node } = require("melody-types");
+} from "../util/index.js";
+
+const { group, indent, line } = doc.builders;
 
 const p = (node, path, print) => {
     node[EXPRESSION_NEEDED] = false;
@@ -21,6 +22,4 @@ const p = (node, path, print) => {
     return group([opener, value, padding, closing]);
 };
 
-module.exports = {
-    printExpressionStatement: p
-};
+export { p as printExpressionStatement };