fix(es/minifier): Fix a bug about Tpl => Str (#8934)

**Description:** I added the method to `swc_ecma_ast` to reuse it from plugins. **Related issue:** - Closes #8931

Author: kdy1

crates/swc/tests/fixture/issues-8xxx/8931/input/.swcrc

@@ -0,0 +1,14 @@
+{
+ // Enable minification
+ "minify": true,
+ // Optional, configure minification options
+ "jsc": {
+ "minify": {
+ "compress": {
+ "unused": true
+ },
+ "mangle": true
+ },
+ "target": "es2018"
+ }
+}

crates/swc/tests/fixture/issues-8xxx/8931/input/1.js

@@ -0,0 +1,6 @@
+export function _jsx(a, b) {
+ return b;
+}
+
+export const a = _jsx("math", `P \\vdash q`)
+export const b = _jsx("math", "P \\vdash q")

crates/swc/tests/fixture/issues-8xxx/8931/input/2.js

@@ -0,0 +1,6 @@
+export function _jsx(a, b) {
+ return b;
+}
+
+export const a = _jsx("math", `\` \\vdash q`)
+export const b = _jsx("math", "P \\vdash q")

crates/swc/tests/fixture/issues-8xxx/8931/output/1.js

@@ -0,0 +1 @@
+export function _jsx(t,s){return s}export const a=_jsx("math","P \\vdash q");export const b=_jsx("math","P \\vdash q");

crates/swc/tests/fixture/issues-8xxx/8931/output/2.js

@@ -0,0 +1 @@
+export function _jsx(t,s){return s}export const a=_jsx("math","` \\vdash q");export const b=_jsx("math","P \\vdash q");

crates/swc_ecma_ast/src/lit.rs

@@ -196,6 +196,54 @@ impl Str {
  pub fn is_empty(&self) -> bool {
  self.value.is_empty()
  }
+
+ pub fn from_tpl_raw(tpl_raw: &str) -> Atom {
+ let mut buf = String::with_capacity(tpl_raw.len());
+
+ let mut iter = tpl_raw.chars();
+
+ while let Some(c) = iter.next() {
+ match c {
+ '\\' => {
+ if let Some(next) = iter.next() {
+ match next {
+ '`' | '$' | '\\' => {
+ buf.push(next);
+ }
+ 'b' => {
+ buf.push('\u{0008}');
+ }
+ 'f' => {
+ buf.push('\u{000C}');
+ }
+ 'n' => {
+ buf.push('\n');
+ }
+ 'r' => {
+ buf.push('\r');
+ }
+ 't' => {
+ buf.push('\t');
+ }
+ 'v' => {
+ buf.push('\u{000B}');
+ }
+ _ => {
+ buf.push('\\');
+ buf.push(next);
+ }
+ }
+ }
+ }
+
+ c => {
+ buf.push(c);
+ }
+ }
+ }
+
+ buf.into()
+ }
 }
 
 impl EqIgnoreSpan for Str {

crates/swc_ecma_minifier/src/compress/pure/strings.rs

@@ -220,23 +220,14 @@ impl Pure<'_> {
  && !c.contains("\\x")
  && !c.contains("\\u")
  {
- let value = c
- .replace("\\`", "`")
- .replace("\\$", "$")
- .replace("\\b", "\u{0008}")
- .replace("\\f", "\u{000C}")
- .replace("\\n", "\n")
- .replace("\\r", "\r")
- .replace("\\t", "\t")
- .replace("\\v", "\u{000B}")
- .replace("\\\\", "\\");
+ let value = Str::from_tpl_raw(c);
 
  report_change!("converting a template literal to a string literal");
 
  *e = Expr::Lit(Lit::Str(Str {
  span: t.span,
  raw: None,
- value: value.into(),
+ value,
  }));
  }
  }