template literal string coercion

Author: mbostock

src/client/sidebar.js

@@ -23,7 +23,7 @@ function preventDoubleClick(event) {
 }
 
 function persistOpen() {
-  sessionStorage.setItem(`observablehq-sidebar:${this.firstElementChild.textContent}`, String(this.open));
+  sessionStorage.setItem(`observablehq-sidebar:${this.firstElementChild.textContent}`, this.open);
 }
 
 for (const summary of document.querySelectorAll("#observablehq-sidebar summary")) {

src/client/stdlib/databaseClient.js

@@ -7,7 +7,7 @@ export function registerDatabase(name, token) {
 
 export function DatabaseClient(name) {
   if (new.target !== undefined) throw new TypeError("DatabaseClient is not a constructor");
-  const token = databases.get((name += ""));
+  const token = databases.get((name = `${name}`));
   if (!token) throw new Error(`Database not found: ${name}`);
   return new DatabaseClientImpl(name, token);
 }

src/client/stdlib/duckdb.js

@@ -345,7 +345,7 @@ function getArrowFieldSchema(field) {
     name: field.name,
     type: getArrowType(field.type),
     nullable: field.nullable,
-    databaseType: String(field.type)
+    databaseType: `${field.type}`
   };
 }
 

src/client/stdlib/fileAttachment.js

@@ -7,7 +7,7 @@ export function registerFile(name, file) {
 
 export function FileAttachment(name) {
   if (new.target !== undefined) throw new TypeError("FileAttachment is not a constructor");
-  const file = files.get((name += ""));
+  const file = files.get((name = `${name}`));
   if (!file) throw new Error(`File not found: ${name}`);
   const {url, mimeType} = file;
   return new FileAttachmentImpl(url, name, mimeType);
@@ -103,7 +103,7 @@ class ZipArchive {
     this.filenames = Object.keys(archive.files).filter((name) => !archive.files[name].dir);
   }
   file(path) {
-    const object = this._.file((path += ""));
+    const object = this._.file((path = `${path}`));
     if (!object || object.dir) throw new Error(`file not found: ${path}`);
     return new ZipArchiveEntry(object);
   }

src/client/stdlib/xslx.js

@@ -17,7 +17,7 @@ export class Workbook {
   }
   sheet(name, options) {
     const sname =
-      typeof name === "number" ? this.sheetNames[name] : this.sheetNames.includes((name += "")) ? name : null;
+      typeof name === "number" ? this.sheetNames[name] : this.sheetNames.includes((name = `${name}`)) ? name : null;
     if (sname == null) throw new Error(`Sheet not found: ${name}`);
     const sheet = this._.getWorksheet(sname);
     return extract(sheet, options);
@@ -76,7 +76,7 @@ function richText(value) {
 }
 
 function parseRange(specifier = ":", {columnCount, rowCount}) {
-  specifier += "";
+  specifier = `${specifier}`;
   if (!specifier.match(/^[A-Z]*\d*:[A-Z]*\d*$/)) throw new Error("Malformed range specifier");
   const [[c0 = 0, r0 = 0], [c1 = columnCount - 1, r1 = rowCount - 1]] = specifier.split(":").map(fromCellReference);
   return [